exhaust first. car comes with shorties. Read through the exhaust forums, a lot of good info there. Either replace the stock shory header for a long tube header, run HFC's, TP's, I don't recommend any shorty headers on market know until Z1 Momentum header work is done. There are a a lot of different types of HFC's and TP's. Just go out an research it here.
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Old Car:GTM TSC'd 550whp / 410lbft tq @ 11.88PSI
New Car: Under Construction
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