Sorry for the long reply. First the exhaust is for a X7 pocket bike it bolts straight up to the engine but you will have to heat it up and bend it out about 3 or 4 inches practically to the point of it pinching also the mount needs to be relocated although mine currently hangs by wire. Secondly the front mount is very tricky to do Im adding pics of the mount soon but it involves some filing and long bolts.
The pipe seems to help the engine breathe better but it feels to only aid in it too get it going. When I first installed it, the clutch kept slipping but now its fine. With a 34 tooth sprocket I'm having issues going up my steepest hill on motor power alone but the original 44 tooth will fix that.