I just purchased a all stock 87 Iroc with the 5.7.I can't afford headers and new exhaust all at one time.Will putting a new high performance exhaust system be a good addition by itself or should I wait to do both at same time.I don't plan on doing any engine mods,just some easy upgrades.Thanks for any advice.

 

I got a 3" Hooker System from Jegs for $260 for my 87 IROC. The system was a breeze to install and it made a big difference. I would recomend going 3" all the way back, from y-pipe to tail pipes. If you have a 3" y-pipe on there now, you could get a 3" high flow cat for $110 and then the cat-back for $260, then save the headers for later. If you have a 2.5" y-pipe, wait to get the cat till you have the headers which come with a 3" y-pipe.

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1987 Chevy Camaro IROC-Z
L98 TPI 350 (5.7L)
TH 700R-4 Transmission
Borg Warner 7.75" 9 Bolt Rear End with 2.77:1 Gears.

Current Mods: LT4 HOT Cam, Comp Cams 1.52:1 Roller Rocker Arms, LPE High Flow TPI Baseplate, Edelbrock TES 1 5/8" Headers, Catco 3" High-Flow Catalytic Converter, Hooker 3" Aerochamber Cat-Back System, Transgo Shift Kit, Performance Resource Chip, Accel Ignition, K&N Filters, JET TPI Air Foil, All Free Mods, Falken ZIEX Z-Rated Tires.

Best ET: 14.32 @ 97.7mph
(corrected for elevation)