I used the original straight axle(which really is not straight), disc brake set up from Plydo. The disc set up uses a press on bushing for the disc which is 69 Ford Fairlane to get the Mopar bolt pattern. The brake bracket uses full size late 70's GM caliper which can be replaced with Wilwoods GMIII
caliper. The springs are mono leafs from Butch.s Rod shop(link below). Hope this helps!

http://www.butchscoolstuff.com/