does anyone have, or know where to get specs on misc rotors?

just picked up some AA rear disc brackets and need something to compare my measurements to so I can pick up some rotors and get this bitch back on the trails.

The a&a mfg brackets are for 1/2 ton rotors- 5 or 6 lug style. 11 3/8" or something like that.

good start, ant one else got some ideas? :confused: