I am looking to modify my banshee more and still be able to run pump gas. I have a +6 swing arm, t-6's, dual k&n's, rejetted, i have the extreme haulers. all i do is sand. mostly trails like in coos bay but i have also been to dumont and glamis. i don't do too much sand drags but i like to take off on the face of the hill. it comes in handy on some of the trails at florence. I hear about shaving the head or going with the noss head, how far can i go without race gas? Also i see an advance key. I also read about porting but haven't done it yet either, I am trying to figure out what setup before i start more. i jumped into the pipes before researching anything. any help would be appreciated.