yeah but if youve got a welder a hammer a spare header and some 36mm pipe scrap why not and they look sick and if you go on long riders and you use mild or stainless steel you get a nice colouration on it it takes about 30mins to round both ends by hammering them in so that they fit snug over the end of the header then place it on the header weld it up on both ends grind down the welds so they are smooth and youve got a nice looking header and bomb with some power gains attached
i dont think ill be running it on a dyno anytime soon just to prove to you if its works or not if you try it then you might be able to judge it but until you do how can you comment im just saying it was a fun project to do it looks good and any power gains are just a bonus all i good fun i guess