Amazing truck. Funny how it has these combination of features because its a "work truck" but they make this a very cool and fun truck. Definitely catches your attention if you're a truck enthusiast.
I don't have a 4 to 5 inch adapter... What I have is a 3 bolt flange with 5 inch hole that is the same size at the stock 4 inch exhaust flange... The two flanges bolt together and so the 4 inch exhaust just shoots right into the 5 inch exhaust. You can see the connection in the video at 00:35. I bought the flange from ftediesel. It worked great for connecting to the stock downpipe. I now use the same 5 inch exhaust connected to a straight pipe 4 inch downpipe.
I used Rust-Oleum High Heat Paint. It's held up great. www.amazon.com/gp/product/B003CT4AKC/ref=as_li_tl?ie=UTF8&camp=1789&creative=9325&creativeASIN=B003CT4AKC&linkCode=as2&tag=myutube-20&linkId=32bef9cf0f45c327482886d8620eff04
