I was wondering if anyone had any measurement for factory seat tracks. I have an 81 camaro and got some seats out of an 75-77 at a junk yard and the seat weren't original to my knowledge. Now I drove my car for the first time today and when I when to mount the seat, it was too wide and too short to use the floor pan mounting holes! If memory serves right, it measured 13.25" x 13.5". Any Ideas?