Quote:
Originally Posted by 1LETHAL_ZL1
FYI
I will be eventually installing long-tube headers, so that's something to factor in as well.

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You'd be better off first doing headers and hiflow cats and keeping the stock catback, which will sound great and give you ~15-20hp. (your stock cats will not fit behind headers)
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2020 ZL1LE A10.
LME LT4 390 short block, LME CID Heads, Kong E2650, FBO.
15" conversion, MT ET Street R 325/15.
100 octane: 1045hp/1055tq.
100 octane + Meth (1x10+): 1117 hp/1067 tq