Inboard Spring--from RMS

Burnt Orange is correct. If your not going to mini tub it the offset shackle kit will allow you to use the entire wheel well. I had 325-50-15 on the back of my 69 with out mini tubbing it. It was tight though. a 275-60-15 on a 8.5" rim fits perfect back there with the offset shackles.

If you were to mini tub it say good by to the rear seat unless you want to narrow it. How ever you can fit some huge tires back there mini tubbed.