I have a good quality tube bender and I am thinking of building my own exhaust system. The bike is an 04 harley sportster 1200 r. What I am thinking of is using the #317-2000 body with the 310-0400 core kit..I am hoping to get the head pipes to an equal length and I am guessing at this time they will be approx 36 inches but I need to do some checking on that..this will be a 2 into 1 system..I have done some shopping and no found just what I am looking for..Any ideas are welcome..