Can you use a 1970 mustang drum spindle with 1970 or '71-73 disc brakes? I have a 1970 mustang coupe I'm building into a stock car and I'm limited to a 15" wheel and have to stay with production type brakes. (plus I don't have the money to buy some $500+ aftermarket kit.) I know the 70, 71-73 spindles have the larger diameter bearing, so I was thinking the disc rotor would fit, but didn't know if the caliper and bracket would bolt up. Basically, I'm wanting to do something similar to the race brake set up in the Boss 302 Chassis modification book, only as cheap as possible. Thanks for any info.