Automatic transmissions-TH180- ???

Looked up used transmission(automatic) for a 87 S-10 and for the automatic it came up with the following choices: AT 4x2 TH180, TH700 W/auxiliary valve body and finally TH700 W/O valve body. What is the difference in these auto transmission's ? How can I check to see what the 87 S-10 has in it? Thanks for the info!! John

what motor does ur truck have in it, is it a 4x4 or 2wd

what motor does ur truck have in it, is it a 4x4 or 2wd
It has the 2.8L and it's a 2WD. Thanks! john

1982-1993 auto trans are 180c,200c three speed 700-R4,4L60,4L60-E four speed automatics the 700R4 has a square pan 4L60 & 4L60-E have one corner on an angle the 180c & 200c not sure as to what the pan looks like

ok u will need the 180...the other ones are made for the s-10s and blazers with 4.3s and u will need a 4x2 tranny, cuz if urs is 2wd then u wont need one with a transfer case on it, so get the 4x2 180