Here's a few pics of the '77-'81 Z28 exhaust from my assembly manual. The 2.25" intermediate pipe coming out of the resonator and the 2.25" tailpipe are actually one continuous pipe from the factory. I also noticed that the assembly manual calls for painting the pipe from the hanger on back with a black high temp paint. The L6 and other V8 exhaust plans don't call for the painting of the tailpipes. Probably done on the Z28 to match all the black trim and look good when you put chrome tailpipe covers on it.
