Pickett Elbows On KW W900

Bought a 2006 W900 with 72" aerocab sleeper that I plan on removing and making a day cab. The truck is going to need exhaust regardless. I was thinking about trying to do something along the lines of factory looking day cab exhaust, but its hard to make the transition to 8" when the elbows are above the frame and not look goofy. Was really interested in putting pickett elbows on like a Pete, to get away from the goofy KW elbows, but I know that it is not very easy to do. It has the 45" steps/boxes on it. Buddy of mine bought a W9 with that style on, and pretty sure they put 34" boxes off a T800 to make it work. Any pictures, help, and suggestions would be greatly appreciated. Would like to go at least 7", preferably 8".

Thank you