Not a problem, I don't have any suggestions on the billet motor mounts but they're definitely a good idea. I don't race mine ( because it costs too much $$$, I might do KOH next year if Polaris offers up another new one as the prize again haha), but I have almost 1,500 miles on mine and my buddy has nearly 3,000 on his (both he and his brother race theirs) and probably 80-90% of those miles are at race pace so between the two of us I think we have a pretty good idea of their weak points. Another thing I forgot to mention that is an absolute must is changing out the Secondary Clutch dampener from the powdered metal crap that is in there to something like this one from Sparks racing
http://www.sparksracing.com/heavy-duty-secondary-clutch-dampener-polaris-2011-2014-rzr-900-xp-xp4-1000xp-xp4.html Those usually go before the 1,000 mile mark, I pulled mine out in two pieces at 700 miles, and they take out a lot of expensive parts when they go. If I was you I would call up Sparks or someone like that and talk to them about what youre building and potentially try to work up some type of sponsorship, it helps that you have a legit build to show them. While you're over there take a look at their manual cam chain tensioner too, thatd be a shitty party to take you out of a race. A couple other things to look into are belt cooling, hot belts die pretty quick in these. Put a temp gauge like the one made by Alba,on the clutch housing exhaust and then monitor it when your testing and do whatever it takes to make sure the belt stays cool in race conditions (lots of belt killer silt beds in baja). Theres lots of things you can do to cool them down, clutch kits, vents for the cover, in-line blower fans, etc etc, the last thing you want to have someone in your dust and look down at your belt gauge and see 200 degrees and then have to back off. I'm only telling you all this because that way i can vicariously live out my dreams through you and keep poor man upgrading the crap that brakes on mine haha
Man thanks again. We got in the shop this week and put together solutions for everything you outlined. What part of the country are you from?