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Just want some opinions . Situation Mild 440 with 480 lift cam kb flat tops and cast heads 2.14 1.81 valves running out TRI Ys Into 2 1/4 pipes.The tranny is a street fighter and the car has 3:55 gears. How much gain if any would 2 1/2 or 3 inch pipes give me. The 2 1/4 exhaust on the...

OK I have been reading the TTI set up for and A body, some questions do i need to take off mu torsion bars to install these things?? Would it be better to set up my engine and get it dialed in with my cheap header then put on the TTIs to prevent damage to them fro getting to Hot? I will take any...