7 1/4” Rearend Disc Brake Swap

I’m looking at going from the rear drums I currently have on my 7 1/4” rearend to disc brakes. All of the common kits I can find are made for 8 3/4” or Dana 60. I found this from ScareBird, will it work for the 7 1/4” or does anyone know of another kit?

I currently have the 14” Mopar Rallye Wheels. I believe that everything front and rear is small bolt pattern. Front already has disc brakes.