Don't do it, there a waste of money and many people actually lose hp. There are a lot of better ways to gain some power. In this order for a 97GT-K&N air filter,3.73 gears, H or X pipe, Underdrive pulleys, Cold air kit...IMHO. That'll get you started.
BTW, welcome to the board. You can use the search function to answer most of the common questions.
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T-Bones 1997 Cobra
Wht/blk, Pro 5.0,FRPP 4.10's, aluminum driveshaft, FRPP throttle body, C&L 80mm MAF, K&N, Steeda U/D pulleys, Steeda timing adjuster, Flowmasters, s/f connectors, FRPP pro springs, BBK caster/cambers.
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[This message has been edited by T_Bone (edited 12-21-2000).]