disk brakes

yes (kinda)...... you will need a set of lower ball joints from a 73-74 disc equipped dart/duster etc........AND...........you will need a set of upper control arms from a 73-76
dart/duster etc. be aware that those spindles are a bit taller and this causes WWIII to break out if you mention it to some moparites. (it will work though/similar to the volare spindles in height). position the calipers to the rear/ may requireswappping sides on setup left to right, not sure though on this last info as I cant remember how the 74 was orientated.