all alum headed motors go 12's
hell any set of alum heads and a camshaft thats emissions leagl will go 12's
12.50's is the NORM around here for modified mustangs with 302's 12.30-12.50's for higher compression 306's and 11.70-12.0's for 351 and strokers in my part of the woods that all OUT THE BOX HEADS AND INTAKES
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88 Hatch 10.60's @ 130
89 Hatch Not as fast but holds its own
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