ok which car would be faster between a 1988 iroc-z 350tpi with dynomax exhaust no headers , accel 8.8 race wire with racin plugs and super coil , advanced timing , and a gutted cat . or 1993 mustang gt with just a flomaster exhaust . and what would the iroc be puttin out ruffly for horse power.

 

Does the GT have a 5spd? You seem to have done some of the free mods, do them all. If the GT is auto I say you, if it is a 5spd I say him. Although I'm not to sure about the 93s I think they ran slower than the 88-92s.

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1990 G92 5spd LB9 - 3.42 80,000 miles

Accel Ignition/Wires (8.8mm), Advanced Timing, TB Bypass, Ported and Gasket Matched Plenum, Synthetic Motor Oil, 160 Thermo, TPIS Airfoil, K&N Air Filters, Centerforce I Pressure Plate and Clutch, Edelbrock TES Headers, Dual Cats, Edelbrock RPM Series Catback, Homemade Ram Air, Bosch +4 Platinum Plugs

14.4 @ 94mph w/2.0622 60ft (w/o headers and catback)

14.426 @ 96.19mph w/2.167 60ft(w/headers and catback)

Also newly modded w/o track times:

Holley AFPR, Underdrive Pulleys, KYB Shocks and Struts, Crane Ignition

 

The IROC-Z.

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89 RS

STILL Looking For:
An 87 IROC-Z28 350 TPI

 

It will be close, but based on my 350 IROC vs. my friend's 92 5.0L stang GT w/ 5 speed, I'd say the IROC.