My old 1985 Z28 had a excellent condition interior. I was going through pictures again and began to notice I've never seen seat patterns like this in any other Camaro. I'm sure there are some out there. What are your thoughts?

I have seen cars with the same door/side of the seat striping, but I have not seen the center portion of the seats with the (pleating)?







Here is the decoded RPO from the VIN. Center console was changed for a 5spd one and the original lost long before I got it.
Description

Matches

1AZ ORDER MODIFICATION - ORDERS SOLD 2,212
15L EXTERIOR COLOR,MEDIUM SLATE GRAY (15L) 1,422
15U EXTERIOR COLOR,PRIMARY,MEDIUM GRAY METALLIC (15U) 1,422
18A ACCENT STRIPE,GUNMETAL (18A) 528
6ZX Unknown 2,413
7ZX Unknown 2,413
8NM Unknown 2,607
82C TRIM COMBINATION,CLOTH,MEDIUM DARK GRAY (82C) 2,273
82I INTERIOR TRIM,MEDIUM DARK GRAY (82I) 4,832
82P WHEEL COLOR - SATIN SILVER 523
829 SEAT BELT COLOR - MED DK GRAY (829) 4,832
9NM Unknown 2,607
AR9 SEAT,FRONT BUCKET,DRIVER,PASSENGER,MANUAL RECLINING(EUROPEAN STYLE) MAN RECL FRT BKT ST,DELUXE(AR9) 11,225
AU3 LOCK,SIDE DOOR,ELECTRIC ELEC S/D LK(AU3) 2,667
A01 WINDOW,TINTED GLASS(ALL WINDOWS) TINTED GLS(A01) 9,709
A31 WINDOW,ELECTRIC OPERATED,SIDE ELEC SI WDO(A31) 6,336
A90 LOCK,REAR COMPARTMENT LID,REMOTE CONTROL,ELECTRIC RELEASE ELEC REL LID LK(A90) 8,697
BS1 INSULATION,ACOUSTICAL INSULATION PKG(BS1) 6,985
B18 ORNAMENTATION,INTERIOR(DELUXE) DELUXE INTR(B18) 5,586
B34 COVERING,FLOOR MATS,FRONT,CARPETED INSERT(COLOR COORDINATED) FRT CPT INS FLR MATS(B34) 7,782
B35 COVERING,FLOOR MATS,REAR,CARPETED INSERT(COLOR COORDINATED) RR CPT INS FLR MATS(B35) 7,589
B48 TRIM EQUIPMENT,LUGGAGE COMPARTMENT(DELUXE) LUGG COMPT TR(B48) 1,300
B84 ORNAMENTATION,EXTERIOR,BODY SIDE MOLDING BODY SI MLDG(B84) 6,607
B9K ORNAMENTATION - B/S MLDG REAPPLY TO RR DOORS ONLY 11,663
B91 ORNAMENTATION,EXTERIOR,DOOR EDGE GUARD MOLDING(BLACK) DR EDGE GUARD MLDG(B91) 803
B94 ORNAMENTATION,EXTERIOR,BODY EMBLEM BODY EMB(B94) 4,440
B97 ORNAMENTATION,EXTERIOR,LOWER MOLDING ACCENT LWR ACNT MLDG(B97) 4,440
CC1 ROOF,HATCH,REMOVABLE PANELS,GLASS HATCH RF(CC1) 4,477
CD4 WIPER SYSTEM,WINDSHIELD,PULSE PULSE WPR(CD4) 6,669
C25 WIPER SYSTEM,REAR WINDOW RR WDO WPR(C25) 1,812
C49 DEFOGGER,REAR WINDOW,ELECTRIC ELEC RR WDO DEFG(C49) 11,500
C60 AIR CONDITIONER,FRONT,MANUAL CONTROLS A/C MAN CONT(C60) 3,564
DK6 CONSOLE,ROOF RF CNSL(DK6) 2,661
D03 PAINT,WATER MASTER (D03) 2,584
D34 MIRROR,INSIDE,SUNSHADE S/S MIR(D34) 4,440
D35 MIRROR,O/S LH REM RH DIRECT CTL,PAINTED PAINTED O/S MIR(D35) 10,997
D42 COVER,REAR COMPARTMENT SECURITY(SHADE) R/CMPT SECURITY SHADE(D42) 3,825
D6E Unknown 299
D80 EXTENSION,REAR END PANEL(SPOILER) R/END PNL MOUNTED RR SPLR(D80) 9,787
D88 STRIPE,SPORT SPORT STRPE(D88) 4,440
E5Z ADAPTER - SPEEDO - DELETE 11,698
E7Z SENSOR - VEH SPD - DELETE 11,698
E9Z KEY - SPEEDO - DELETE 11,698
GC5 FLEET INCENTIVE - KEMET ELECTRONICS CORP. (C/G/H/K/U/W-TRK CKGST) 4,113
GC6 Unknown 4,113
GU5 AXLE,REAR,3.23 RATIO 3.23R(GU5) 3,391
G80 AXLE,REAR,POSITRACTION,LIMITED SLIP POSITRACTION L/SLIP R/AXL(G80) 1,043
J50 BRAKE SYSTEM,VACUUM POWER VAC PWR BRK(J50) 10,269
K05 HEATER,ENGINE BLOCK ENG BLK HTR(K05) 4,217
K34 CRUISE CONTROL,AUTOMATIC,ELECTRONIC CRCONT(K34) 2,725
K90 GENERATOR,108 AMPERE 108 AMP(K90) 822
LB9 ENGINE,5.0L(5.0F),V8 EFI CAR ONLY 5.0F(LB9) 822
MD8 TRANSMISSION,AUTOMATIC 4-SPEED(THM700R4/4L60) 4-SPD A/TRANS(MD8) 8,702
MX0 TRANSMISSION,AUTOMATIC,OVERDRIVE(MERCHANDISING OPTION)(MD8) A/TRANS PROVISIONS(MX0) 8,703
NA5 EMISSION SYSTEM,FEDERAL REQUIREMENTS FEDERAL EMIS(NA5) 7,155
NK3 STEERING WHEEL,SPORT,SOFT RIM,SIMULATED LEATHER SIMULATED LEATHER STRG WHL(NK3) 4,440
N33 STEERING COLUMN,TILT TYPE TILT STRG COL(N33) 8,126
N65 WHEEL AND TIRE,SPACE SAVER SPARE(STEEL) STOWAWAY SPARE(STEEL)(N65) 1,732
N90 WHEEL,CAST ALUMINUM W/8 ROUND HOLES(6 BOLT HOLES) AL WHL(N90) 3,069
QAC Unknown 299
TR9 LAMP GROUP,COURTESY LP GRP(TR9) 7,355
TT4 HEADLAMPS,TUNGSTEN QUARTZ HALOGEN HALOGEN HDLP(TT4) 7,146
T63 WARNING SYSTEM,HEADLAMPS ON ALARM HDLP ON ALARM(T63) 7,355
T93 LAMP,TAIL AND STOP(SPECIAL) SPECIAL TAIL & S/LP(T93) 4,440
UA1 BATTERY,HEAVY DUTY HVY DUTY BAT(UA1) 3,369
UP7 RADIO,PROVISIONS FOR MONAURAL INSTRUMENTATION RDO PROVISIONS(UP7) 1,732

 

There were some really ugly interior/ seat materials used in these Cars.

There are some Darker Colored Zebra Striped Seats that look worse to me.
Also I never liked the Seat Material that said "CAMARO" 10 times.

 

Your seats are not original for an 1985. They are nicely done. They look like 1984 seat material on the headrest and sides of the seats and 1983 material in the center part. Nice combination using both years I was never a fan of the 1984 Zebra style material, but do like the 1983 Plush style material in the center portions of your seats. The combination looks better than either one by itself They actually look better than the original seats in my 1985 IROC! I've always liked the analog clock in the console. Good looking car.
Here are those RPO codes you listed as Unknown.
6ZX Spring-computer selected FT LH
7ZX Spring-computer selected FT RH
9NM Spring-computer selected RR RH
8NM Spring-computer selected RR LH
QAC Tires, P253/60R15 Black wall
GC6 Fleet incentive source one (U/W)
D6E Gear-speed driven (25522483)

 

I always wondered if the seats were not original. As you said it looks like a mashup of a couple different years. If they were redone they were redone extremely well and it would have been before 2000. That is when my friend first bought the car. I got it from him in 2012, then sold in 2016.