I'm needing some RPO help, if you would please check your rpo list (rear hatch, storage lid) and find these numbers and post them please.

Transmission- MX0, M??
VSS- D8N,D8G,D8M,D8I
Gears- GU5, GU?
Tires- QPH, Q??


Trying to do some research, please help. Mainly looking for an ORGINAL 91 stock manual trans setup.

92 Firebird here. RPO codes MB1,MM5, D8M,GU6,QPH. Hope this helps.

thank you very much. exactly what I was looking for!

MB1 : TRANSMISSION, MAN 5 SPD, BORG WARNER, 76MM, 4.03
MM5 : MERCHANDISED TRANS, MAN 5 SPD PROVISIONS
D8M : SENSOR, VEH SPD
GU6 : AXLE REAR, 3.42 RATIO
QPH : TIRE ALL, P215/65R15/N BL R/PE ST TL AL2