I completely feel you on your reasons. I just sold my whole car and started from scratch. I saw you looking for long tubes. Of.course I'm partial to PPE's, there are at least a couple good options now days. Z1 has their modified VHR manifold too. I'm not sure how far you want to go with NA mods, but after doing the standard breather mods, you can look at reducing rotational mass. I bet buying two piece rear rotors will show measurable improvement.
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Old Car:GTM TSC'd 550whp / 410lbft tq @ 11.88PSI
New Car: Under Construction
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