PerTronix R&D shop did a complete exhaust installation on our Camaro from the Doug's long-tube headers to the JBA Stainless Steel mufflers. All the pipes clear subframe connectors and chassis mods ...

The basics of fitting exhaust headers to your vehicle ... This long collector often contains a baffle or muffler insert. This style of header is widely used on T-bucket roadsters.

In a 3,100-pound car with 10.5-inch tires, a 5,500-stall converter, and mufflers, the motor would typically need a stepped 21/4- to 23/8-inch header with 4- to 41/2-inch collectors." See All 15 Photos ...

1 The TTI C-Body headers feature 1 7/8 inch primary tubes and three inch collectors. The flanges at the collector and cylinder head are 3/8 inch thick, so warping or leakage is unlikely.