Dont get a 70mm TB. Matter of fact I dont think the TB should be of much concern at all right now. Since you have and AOD go with 4.10 gears, a stall, pulleys, and a H-pipe. You will have 13's no problem. I promise.
(As long as your tires hook)
Skyler
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-1989 Saleen Mustang #406- TFS Heads, E-303, edelbrock intake,70MM TB, 73mm MAF, off road H, headers and 3chamber flows.
12.55@107mph
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