I'm finaly installing headers + cat-back.
For what i've read almost everyone agrees that allmost any cat-back is better than stock. So I guess the brand won't matter much? (thinking about Edelbrock vs. Dynomax)

It's interesting to (hopefully) feel the difference since I'm installing at the same time Crane cams 2032 roller, Edelbrock TES headers and cat-back. Dyno2000 is giving me impressive ratings - impossible ratings, even when using solid lifter insted of a roller. I'm hoping at least 35-40 hp of all that work and money.

Maybe my previous mods will now give all the gain it's possible get.

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-88 GTA 305TPI/T5, 3.45 posi, Crane cams 2032, ported+portmatched heads, base, plenum, multiangle valve job, no cat, no air, Haltech E6GM.

Headers and an aftermarket exaust can really open up the potential in a camshaft. Go with the 1-5/8" Edelbrock Headers (#6872) and any sort of 3" cat back. Hooker makes a good one from what I hear.

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Eric Natzke
91 Firebird 305 TBI

ASCD Ram Air Hood-3" custom exaust-Flowmaster 80 Series-No Cat-Edelbrock TES Headers (coated)-March Pulleys-TBI Spacer-K&N Open ELement-TransGo Shift Kit-B&M Supercooler 28,000 GVW-Hypertech Thermomaster-180 Stat-3:42 GM Gears-Auburn Posi Unit-Edlebrock Strut Tower Brace-MSD Superconducters-MSD Cap & Rotor-MSD Blaster Coil-Rapidfire Plugs-265/50/R15 Tires-Emmison's all Gone-Free TBI mods
http://members.aol.com/j007golden/91firebird.html
For info on certain parts or mods go to the site below
http://members.aol.com/j007golden/modeval.html

I like my applied technology set up all 3" cat back rumbles like a big block.




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http://sites.netscape.net/bulldogfrazier/homepage
+
http://www.fracoinc.com/


Keep your ride shinning with pride

Those headers and cat back will work great with that cam. I'd recomend the Hooker cat-back system I have been really happy with it on my car. Its the best looking and sounding IMO.

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1987 Chevy Camaro IROC-Z
L98 TPI 350 (5.7L)
TH 700R-4 Transmission with 3.08:1 Rear End

Current Mods: LT4 Hot Cam, Comp Cams 1.6:1 Roller Rocker Arms, Edelbrock TES 1 5/8" Headers, Hooker 3" Aerochamber Cat-Back System, Gutted Catalytic Converter, Performance Resource Chip, Accel Ignition Coil, Cap, Rotor, 8.8mm Wires, K&N Filters, JET TPI Air Foil, Ported TPI Plenum and Base, All Free Mods, Falken ZIEX Z-Rated Tires.

Best ET (w/o LT4 cam): 14.32 @ 97.7mph
(corrected for elevation)