I would think you can get any rad kit for an 800 or 100 and it will work as long as its for the G2 chassis. I would get a hold of rubber down customs or cfab on face book and talk to them. I personally have used RDC stuff and their build quality is good. I see a bunch of stuff on facebook that cfab has done and it looks very nice as well.
2015 XMR 800
Stock for now
(SOLD)2005 Brute 750
homemade snorkel,dynatek cdi,temp gauge,27in mega mayhams,2in highlifter lift kit,RDC rad kit , Fuse block delete, rear buss mod