For what it's worth, I made 216 WHP (mustang dyno) on almost stock ports, stock intake manifold (modified) stock NA injectors, Racing beat headers, presilencer and dual Dynaflow mufflers on factory Y pipe. There is nothing wrong with the factory ports at all (they only need a little cleaning up). You could do better with a bridgeport, but could you average 25 mpg, idle at 700 rpm, go through drive-throughs without having to shut your car off, and loan your car to friends?
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1986 GXL ('87 4-port NA - Haltech E8, LS2 Coils. Defined Autoworks Headers, Dual 2.5" Exhaust (Dual Superflow, dBX mufflers)
1991 Coupe (KYB AGX Shocks, Eibach lowering springs, RB exhaust, Stock and Automatic)
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