Vinnie......that's a slick looking rig you built. Can you post a close up of the chain tensioner? Looks like you built a good rugged one. Sweet looking pipe too. Is it loud?
Patch, I know my buddy cut the pipe about 2 inches from the cylinder and welded in about a 3 inch extension to get the muffler to clear the frame. I had to do the same thing on a mountain bike I recently made.