Your tranny should be a 4L60E. E= electronically controlled shift, which means you'll need a computer to run the shift valve in the valve body, and a electronic speedometer, which also means you can't run a gear driven speedometer. Not as the 700R4 tranny, which is simple to convert, with a torque converter lock up.
You can get a wire harness to run your tranny behind a carbed motor, but you'll still need to run a ecu for the tranny.

I'm looking for the same tranny you have, mine is for a 1993 s-10 Blazer. I have looked and asked, but no one has a kit to make a 700R4 tranny work with my factory ecu, which I need with my factory 4.3 v-6 with MPI

Pat