Well you will need a few things...I'm no expert but here is a few things that stand out to me. One you will need a different swingarm/carrier (whatever you want to call it). Next you will need a new Torque converter/clutch. Which comes down to the shaft diameter but most people use the Comet 780 clutch (
http://www.cartpartsplus.com/comet-780-clutch.html) Then you will need a new belt to fit the new set up. To be honest your best bet might to be as the all say " pick up the phone and call a site sponsor" The do it yourself set up isn't easy by any stretch of the imagination. Those would be the $$ items you would need that stick out right away to me. Clutch $230 Swing arm $200 Belt $40+ So atleast pushing $500+ for the major items