I have 3" on my SB powered fish. The KOS 499 had that huge 4 1/2" system which was very heavy and not that quiet. I think I will have our local ex fab guy put together a simple 3 1/2" H pipe. Should be plenty of clearance as the frame is already notched for exhaust pipes. Gonna go with dumps like da fish has.

I am sure glad Hardesty / Robbins left the car wiring in so the lights / flashers still work. Need to put in a pass side window regulator so that glass window works. Maybe tint the read side windows so the bars and data system don't show as much.