I'm trying to figure out what other vehicle
has a compatible transmission that will
work with a 91 s10 with 2.8
Just s10, sonoma, blazer and jimmy. 4x4 trans and 2wd trans won't interchange unless you swap the output shaft (not recommended unless you build transmissions). The camaro shared a bellhousing pattern with their earlier v6's but I think had the 200r and you should have the 700r, assuming your an automatic
Btw a 4.3 trans won't work, it has to be behind a 2.8, 3.1 or 3.4
Search Chevrolet S-10 Questions
Are you a UK consumer? CarGurus now has a discussion forum in the UK.
Chevrolet S-10 Experts