![]() Our W-72 package systems come with the correct y-pipe with correct flanges, test pipe to eliminate the resonators, correct y-pipe with correct flat for parking brake cable correct resonators and correct tail pipes with exact correct brackets welded on, and correct reproduction chrome splitters. We have seen the splitters at different angles on our original pipes and therefore have decided to allow our customers to weld the tip at the degrees of their choice with a nice tight slip fit aiding them through the process. When these cars came from the factory the chrome splitters were welded on. Our tail pipes are the correct 2 1/4″ tail pipes with exact correct bracket welded on. We have chosen to provide a test pipe in replace of the cat simply because a correct cat is no longer available, and most customers want to eliminate it. Our base package 400 exhaust system comes with the correct y-pipe with correct front flanges and correct rear flange welded on. The exhaust gases exited out of the tail pipes in maybe the most recognizable chrome splitters of all time to top off the exhaust system. ![]() ![]() The cars equipped with the W-72 package and the base package 400 got a 2″ Y – pipe coming off the passenger and driver exhaust manifolds before it enters into a 2 1/2″ pipe and finally connected to a catalytic converter, a single 2 1/4″ over the axle pipe got the exhaust gases back to the muffler on the base package and the W-72 system used a y-pipe to split the exhaust gases into two separate resonators and tail pipes. The 1978 Trans Am had three different exhaust systems depending on performance and the engine it was equipped with.
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