Putthead714

I know they make a 3" downpipe, but I was wondering if there was anyway that I can go bigger on the downpipe. Possibly a 3.5" or even a 4" downpipe into a 4" exhaust. Or even if I have to remove the downpipe and run "true duals" into a straight through muffler and exiting behind the rear tire (similar to stock).

Please let me know what you think.