Sounds like your a pretty good sledder. I'm heading up there those days to. I'm going to ride tumbler first. Keep in touch. Please don't try to fix your own sled. I heard your mechical skills aren't that good.:nono::nono:
If you have a M8 and you want to put D@D single pipe , y pipe you will need a control box, If you ride at lower elevation. But when buying remember all D@D stuff is not good at higher elevation. There main thing is Drag Racing