http://www.prestage.com/carmath/calc_hpformph.asp
check out this link, it gives some cool info on top MPH...
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Black, 84 GT, T5, ground effects, shorty headers, dual exh., rear spoiler from a 87.. In the works; 4:10's, 89 ported heads, edelbrock Performer, matched cam and holley carb (?? size)