I've got a disc brake set up I believe is from a '72 'Cuda, but not sure. I'd like to put them on a '70 power drum 'Cuda. What's the diference between the early ('70) disc set ups and the later ones. When was the change? Do the parts interchange, early to late set ups? What parts can be used (if any) on the drum set up that's on there now? I know proportioning valves need changed, I'm just looking for the things at the axle to take off and replace.

'70-'72 used one style, '73-'74 used another.

Rebuild parts are more expensive for the earlier set up.

On the early ones the calipers mount with pins, the later style is the caliper that slides into the bracket.

'70-'72 used 2 piece rotors (hub and rotor held together by the lug studs).

'73-'74 E-body and '73-'76 A-body disc brakes interchange. This design originally used unicast (1 piece) rotors with different inner bearings designed to fit the newer (larger diameter)spindle.

'70-'72 splash shields do not fit '73-'76 rotors.

I sell spindle sleeves and caliper brackets so you can use the common '73 and newer brake parts on '70-'72 knuckles.