I have the same idea as that yellow drag truck, only out of the top of my shell, and I am thinking about some different tips, not just cut straight or slant cut. I had a F-150 a few years ago... . just a little 5. 4 triton, and yes it was a hunk of junk... . however the exhaust I ran on that thing was sweet. I had 2 4" turnout tips side by side in the middle of the bed right under the rear window half way up the cab. It sounded pretty cool. I'll tell you what, never seen anything quite like that on a gas truck before. I will post some pics of all my past exhaust on my trucks, they are all a little different.