Weller Racing has the bearing carrier, etc. you need for chain drive or can go gearbox from RPM if want to keep reverse. I have had both and prefer the bearing carrier as it keeps things simple and don't miss reverse (or 4wd). Its nice to be chain drive, no worries about belts/CVT tuning. Best advice I can give is do not try to stuff in the driveline with close clearance to chain, open it and give proper clearance and a little length ... actually, best to just chop rear off and use real metal rather than a hack job.