Leed disk brake conversion kit
I did not know that thanks. Is the 73+ stuff what the SSBC kit uses?
No. The SSBC stuff is aftermarket, and some of it only SSBC makes. If I remember correctly some of the parts are modified Mustang KH disk parts.
DoctorDiff sells 73+ mopar based kits, everything is reproduction 73+ Mopar parts so all the wearing parts can be replaced at any local parts house if you want.
This is the standard 10.95" kit, basically the same exact stuff a 73+ A-body would have come with. Not sure if you're switching bolt patterns, but they're available in both the 5x4" and 5x4.5" pattern. The nice part, even if you are keeping the 5x4" pattern, is that if you wanted to upgrade to BBP later all you'd have to do is buy regular 73+ rotors.
10.95" Front Disc Brake Kit (Stage 1)
Or if you're running BBP wheels in a 15" or larger diameter you can get the 11.75" kit, which is still just 73+ spindles but with the later, larger 11.75" rotors from a B/R body. That kit isn't listed as being available for the 5x4" pattern, but, you could ask. The 11.75's with the larger 2.75" piston calipers make a big difference compared to the stock 73+ 10.95" rotors with the '73-'75 A-body 2.6" piston calipers, I ran them on my Challenger for like 70k+ miles. Even on a '72 Challenger with 275/40/17's on all 4's they did a great job on the street.
Mopar 11.75" Front Disc Brake Kit (Stage 2)
Cass
@DoctorDiff is very knowledgeable, he can definitely help you with what you need specifically to convert your car to either one of those kits