Here is a pic of the custom header I made myself, by modifying the golf cart header, just shorted it up, welded it all back up and using the same cheapy muffler, still loud as heck though. Debating a bigger quiet muffler. Quite a challenge basically doubling the power output in these buggies and the tuning needed to make it work, about the same as any other rig. If I had more time for it, I would put larger disc brakes and a power steering rack in it, with better shocks. But it does what we need it to, a little too fast at times, if the trails are a bit bumpy. Not as smooth as the Gator we goof around race with, but it has no problem passing an 800D on the straight and leaving them in our dust Always a riot in our pasture on burn nights lol