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  1. I once put a set of 2v heads on a 4V shortblock, also had headers and and an intake with a 600 holley. The car was a 1970 XR7 Cougar with an FMX (B&M Shift kit), I think the mufflers were hush thrush on the stock exhaust. Anyway the car came off the line and was a screamer all the past any legal speed limit.
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