You can get the 73+ Mopar disk kit from Dr diff with the small ball joint adaptors to keep the stock UCA's for $480. Includes everything- spindles, caliper brackets, calipers, rotors, bearings, hoses, dust shields and hardware. But it does convert you to BBP. The replacement parts are all stock 73+ A-body though, so, I don't see how that's difficult. Maybe more expensive than the metric stuff the scarebird kit uses though.
The scarebird kit is $105 for just the adaptors, the entire kit is $480 and I don't see bearings and a few other things you'll need in there. Not gonna get that conversion done for $200.
