I bought some 4'' pipe and had a buddy of mine that ownes a muffler shop make me a down pipe the I went to the bone yard and got 5ft long peice of 6in smoke stack off of a semi-truck that had a turn out put it under the truck sliped it over the 4'' pipe cut notches in the end and compressed the pipe around it welded it and made some really heavy duty hangers out of reabar. It dumps under the truck about a foot before the rearend it sounds good. when I pull up to the local truck stop to fill up all the truckers in the cafe stand up and look outside to see what the hell just rolled in.
I bought a full 5" exhaust system from ebay all straight pipe for under $300 it's loud but i love it and pulled the silencer ring off the turbo just to hear it spool up the neighborhood always know when i'm cummin and going.rotfl