Well i have an 08 rzr and the dust is really bad here in central texas. It just circulated in the cab, there is more dust on the inside then there is on the outside. I have a half windshield - moved it up 1 in from the body but that didnt help. Put workout mats under both seats and that didnt help as well. This weekend as i was driving i notice that the dust appeared to be coming from the sides. Would putting doors on help or a back windshield? Or am i missing something else? Fender flares maybe?