Ok, I need to warn you. Drum brakes require about 10 lbs of static line pressure to keep the shoes close to the drum. When you convert, you need to remove the device that does this. Sometimes it is an insert check valve that threads into the brake proportioning valve. Other times it will actually be a component inside the proportioning valve. Or it could be inline someplace. Either way, you need to find it and remove it, otherwise your disk pads will wear out rather quickly. I would also suggest buying an adjustable pressure valve limiter to prevent the tag from locking up. Because of the swing arm, when you apply braking, the twist of the tire rotates the swing arm up, reducing braking force. Under hard braking, most of the weight is going to transfer to the drive axle. Revcon uses two tandem axles with the weight distributed evenly. Even with that, I still had to install a limiter to prevent the rear most axle from locking up prematurely. I think I picked it up from Summit Racing.
2004 AllegroBay 34XB Nov 2017 Banks, Front & Rear Trac bars, Konis
Sold:'83 Revcon Prince 31' FWD GM Performance 502 w/Edelbrock MPFI, Thorley Tri-Ys & Magnaflows, 4L85E 4 spd