Underdrives are the best bang for the buck besides gears. They are far and away the best mod for a mustang under a 100. You can gain 10rwhp with them!
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04 Screamin Yellow Cobra
KB 2.4 (585/556 pump 626/666 race)
00R brakes, DFX clutch, Level 5's, return fuel system, Lts with 3" exhuast, FR500 wheels and all the other fun stuff.
GONE 1991 Lx sedan 5.0, 5spd (Liberty proshifted TKO) S-trim, Ported TF heads everything parted out.
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