hi Bill, that's the problem with under floor pedals, packin' 10lbs of s++t into a 5 lb bag, there just ain't much room down there, you gotta run between the 4" main frame rail, and the 1st master cylinder, under the other 2 past the outter frame rail and then onto the side pipes, Spintec probably has what you need-
Oval Tubing - Oval Elbows - Vertical Oval Elbows - SpinTech Performance Mufflers