This listing covers model years 1975, 1976, 1977, and 1978 GMC ½T 1500, ¾T 2500 and 1T 3500's stock with the 454ci V8. Photo depicts the stock dual exhaust for 1975 GMC 1500 ½T with the stock 454ci. 
  • Dual exhaust system consists of the LS/RS exhaust pipes, LS/RS mufflers, LS/RS tailpipes.