After seeing TDR member Fred Swansons Exhaust tip I wanted something similar. I went to my local Kenworth dealership and bought a 5" by 36" Mitre cut stack. Then got a 4" to 5" adaptor and a stainless steel band clamp. Cut the stack down to 17" and cut my stock tip off. The only thing I may do is rotate the band clamp so the bolts are on the top. It may be less visible that way. I got the stack for 35. 00 because it was slightly used, and I got 2 tips out of it, since I only needed half of it. When it starts to look bad, I'll put the other half on.