You dont need to use a spacer to clear the wheels when you use ifs calipers. Im running the 94 calipers and they are the 4 big piston calipers, all I had to do was grind the fins down a bit and they clear just fine. You would have the same clearance I do on your rig so you may as well get the rotors.
And Kyota yes you can do it for really cheap. But 86 already knows that.
