Dating previous owner's disc conversion

Master cylinder looks like a later Mopar aluminum unit, could be from a later "cloud" car, maybe a Dakota or could even be from Dr. Diff. Power booster looks like one of those generic 8" units, not sure what the mess is underneath that looks like it converts a single pot brake system to the dual master, but I don't like it. Caliper brackets are 73+ OE stuff, same for calipers, rotors and spindles. Not sure exactly what they're from because you can't see enough of everything, they could be 73+ A or FMJ pieces. UCA's and ball joints appear to be the later 73+ stuff, but it's pretty hard to tell as not much is showing. If you separate the UCA from the spindle and there's a sleeve on the ball joint taper then they're early SBJ stuff using ball joint sleeves.