[bill3rail]

Originally Posted by LockDoc

Unless there is a build sheet under or behind the seat (in the springs) you are probably out of luck with no SPID.

The ring and pinion tooth count chart is in post #2 in this thread:

http://67-72chevytrucks.com/vboard/s...d.php?t=578793

LockDoc

I didn't know about build sheets, I will be removing the seat because I wanted to replace the cable anyway.

Thank you for the link, I read that one once before, but failed to save the link.