You can't ever go wrong by installing a good bumpstick. LT-1's sound great with a lope at idle.
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'96 Z/28 Convert Sorta Pro Touring
1967 Chevelle SS396 Convertible On the way to entry level PT
2013 Ford SVT Raptor Supercab Pro fuel consumer
The Impalas have steel heads,put a set of camaro or vette heads on it.and a cam is going to must a Comp CC503 is agreat all round street cam for a stock Lt1