We all like old truck pictures, so as soon as you have permission please post some pics of it as-is. Instructions are on the lower left of this page.
Welcome by the way!
Lots of S10 info on this site and others. A Google search of the www will yield tons of hits. The original/ first series S10 longbeds are the correct 116" wheelbase for Advance-Design (47.2-55.1) 3100 (1/2-ton) trucks.
What year/ model/ series truck is it?