1. just get a k&n adapter plate
2.
3.haulers, geckos , sand skates , really a prefrence sort of thing .
4.It already has a DG Exhaust on it. One of the clamps between the pipe and silencer is broke open..what clamp the exhaust clamp ?if so it depends what u will pay depending on if u get billet or regular clamps .. u dont need spark arrestors , if u have them there should be a stamp on your silencers saying something like us forestry approved or similiar.if u do need them u can go to numerous places .parts unlimited, ronnies atv, rocky mountain atv to name a few.
5. yes lonestar makes its own stem .. mostlikly the clamp is made for a lonestar stem..