I have a set of brackets left for sale to convert your G-code or F-code rear end to dual caliper disc brakes, good if you're looking to build a drift truck. They use '78-'87 GM metric calipers(I have Afco 6630311), rotors are 2004 Mustang rear rotors(Centric 12161046 is what I have) You will need 16 inch wheels as far as I can tell, I have a set of 16x7 +6 Crown Victoria wheels over them(pictured below) This is for the brackets only, you will need to supply rotors, calipers, centering rings, adapter lines, etc... $160, shipping included. They are located in Oregon 20170502_115514 by Austin Galusha, on Flickr 20170502_115535 by Austin Galusha, on Flickr 20170314_130131_zpsftruumb4 by Austin Galusha, on Flickr
I'm not, currently. The shop that was cutting them out for me closed and never gave me a copy of the burn file.