is it a 5 lug on 5.5 circle?
most likely it is
i used 77 f 150 front rotors for a d44, ground down the flange on the axle, used a 1/2 inch washer to take up the gap behind the backing plate. then i used the universal weld on bracket from ruffstuffspecialties.com for a 3.25 tube and i had to re cut it with a hole saw since it was designed for a 12" rotor and not an 11.75" ford rotor. with that bracket it allows you to run a 74 3/4 ton chevy caliper and pads.
i am still in the process of doing this, but i did it all for under 150.
search google for disk brake 9" and there are a couple good threads on pirate.