Traction Control Needed...

All you need to know was posted by me last year:
Unless you are relocating the rear springs you will not get a 265 or 255 tire on that car. No matter what size or offset wheel you use. If you can find the perfect offset wheel, a 245 or 235 might fit on it. I have been thru this, tried all different size tires and wheel offsets on this vintage of A-bodies, and these are the facts. And, you need to measure both sides of the car because what fits on one side might not fit on the other side!