62 C-10 bench seat question

[Joe Pass]

Newbie from Windsor Ca, with a 1969 C-10 bench seat in my 1962 C-10 short bed stepside question. I want to use a 60-66 style seat cover (two tone/pleats)and I don't know if the frames are the same. I know the seat tracks are different height but the frame as best as I can tell are similar if not the same. I called Classic Parts of America and they didn't know either.
I wouldn't have known I had a 1969 seat if it wasn't for the build sheet tucked into it. The 1967-72 seat covers are mostly styled and have tooling patterns for those years.
I thought I would ask before I took a chance...Thanks