The second owner has an exhaust shop and he custom built a 3", high performance "H" exhaust system that has the sweetest "ring" a stock Rocket 350, 4 barrel (260 GBHP @ 4600) ever made! I have had more than one High Performance Muscle Car with a lot more horses pull up next to me at a stoplight only to ease away at the light change or ask "what did you do to that 455?" :>)