I have the edel 6037's, and im guessing my compression to be about the same as stock. The info above me is way off, stock is around 9:1 with the stock heads, which are like 60-64cc range. The 6037's have a 60cc chamber, so it is esentially the same as stock, maybe a little higher, but not much at all.
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1993 GT/AOD
'93 Mustang GT