What tires to get.

I ran Mickey Thompson 255/60-15 drag radials on my 70 Dart on wheel Viniques 7" wide SBP Rallye Repo wheels. No modifications to the springs or wheel well needed but they barely fit. You couldn't install or remove them by jacking up the car under the axle; you had to raise the body of the car with a bumper jack to get the wheel well opening high enough to insert the tire into the opening.