I think one of the best ways to save weight would be a two into one exhaust. I wouldn't think it would be restrictive. Some companies make four into one. I hope someone comes out with one soon. I called Bills Husky and Brian is going to look into it for me. If anyone knows how to do it, let us all know.
On my previous bike (CCM) some considered it an absolute necessity to alter the single exhaust to a twin! Think it might well be advantageous just to take up knitting and leave design to the professionals.
