Decided to go with some tr thrust originals or maybe the ds, it will be 15x8.5, what size tire should i run? i would like a meaty sidewall with some great grip.

If it were my car,I would go with the two-piece Torq-Thrusts,,either the II's or Classics. A 15x8 TT D only has around 3 5/8" backspacing. An 8" rim on your car will probably require 5".
You want to run the same size tires all around or bigs 'n' littles? If the latter,some 225's or 235's on the front and 275's on the rear would fill up the fenderwells.

have fun fitting those 12" discs into 15's

I doubt Jon is running 12" brakes now as he already has 15" wheels on the car,Adman. But you're right,15's wouldn't fit over a true 12" rotor.

there from matts
i measured them and i dont really remember the size but the box said 12 in rotors and they do fill the wheels. im gonna go bigs all around and then for the track ill have a set of steel ralleyes.