T5's were used in soooo many different applications it isn't necessary to limit your search to S10 models. Even then there were different engines hooked to them and the gearing is different. I'd look for one that had gearing matched to whatever engine your running i.e, a 216 or 350V8 sure have different requirements for a transmission, don't they?
I've seen things that indicate up to 260 different applications for that tranny in GM, F*&d, AMC, Nissan, even Cosworth and Isuzu. LOTS of them out there so just be sure your getting the one you need. If you have more specific info I can give you more detailed help.
