Originally Posted by 3SLO5
the wheel opening and area in front of the tire is the same the rear part in back of the tire is longer on a 70-73.
After seeing your response, I got out my Classic Industries catalog and compared the pictures. I can see what you're talking about. I'm really glad I asked because I was getting ready to cut out a lip from either a 75 or 79, neither of which would have fit right. Thanks for pointing out the difference.