yo im gonna go ahead and dig up my post from forever ago. but i did something you guys might want to see. lol.
this is ona 84-95 drop spindle. i took a 350z front rotor. and had a machine shop redrill and tap it for the rear of the toyota hub. and then i used a 300zx 30mm caliper and made my own brackets. and bam! there it is. i had to grind a little off the front of the caliper so they would fit. but it was pretty easy. i cant find any more pics of it though. :/
its a 13in rotor. and you can get a drilled and slotted set off ebay for like 100 bucks.