- Dual exhaust system consists of the LS/RS exhaust pipes, LS/RS mufflers, and LS/RS tailpipes.
-
This listing covers MY's 1975, 1976, 1977, 1978, 1979, 1980, 1981, 1982, 1983, 1984, and 1985 GMC ½ 1500, ¾T 2500, and 1T 3500's and starts after the catalytic converter. Photo depicts the stock cat-back single exhaust for 1976-77 GMC 1500 ½T 2WD 117.5"WD with the stock 6cyl.- Single exhaust cat-back system consists of the rear exhaust pipe, muffler, and tailpipe.