I have an 05 C4500 flatbed to haul a 5th wheel. I need some noise, & performance. Can,t find any one who makes after market exhaust for 4500s. Have found some stacks, but am not sure about running straight w/out mufflers. Don't want to screw up the performance. Who makes an after mkt muffler? Can you do away with the CAT? Couldn't get much even from BANKS. The don't make exhaust for it either. I need to know what I can do,& how, with the exhaust. Heeeeeeeeeeelp
Tom