I made my own. I used 3/8 plate for caliper mounts, front rotors from a 1/2 ton ford, and front calipers from a chevy.
If I were to do it again, I would order the caliper brackets from ruff stuff, it was a PITA to make my own.
Also, I think that TSM makes a kit. It would seem pricey, but think about sourcing all the parts seperately, then trying to make them work. It's probably worth it.