Chevrolet Repair: Chevy transmission, fuel mileage, z 71

Question
I have a 96 Chevy Z-71 extended cab with a 350 Vortec. What size transmission can I put in it?

Answer
Hi Chris... You are pretty much limited to putting in what was in there to begin with unless you want to change a lot of things. i will assume that this is 4x4 as you don't say... what is it you would like the truck to do.... pull better? better fuel mileage? etc.etc.  hope this helps