Maybe they did get 20 RWHP from the change.... I can see how adding a set of mufflers to a stock car could increase the rear HP that much... (if they also had about 8 cats in the stock H-Pipe, a very dirty paper filter, and tested the car in 100degree Texas weather..) ---I'd buy that for a dollar.
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// 1998 GT-Steeda Conversion \\ -- Sold
// Now own 2001 F-150 SuperCrew 5.4L \\
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