hey p9, on this exhaust i got input from burn's stainless. they are here in costa mesa and design and build custom headers for race cars, boats etc. they have a computer program where you give them all the engine specs and where you want your power and they generate design. according to them the optimum is 41 inches long, 3 into 1, seperate 1 1/2 " pipes till collector and put collector as far down stream as possible. so keeping looks in mind this is what i did. the collector i got from them is a work of art. i'll post some pics of the inside of it also. should have it done today then i'll try different colors for the system, chrome, stainless, black.. and make a belly pan from the rear chrome frame cover to cover up the mount bracket and the now more exposed empty starter area under bike.