Check ToyoDIY. You type in your VIN# and it will give you the part number. They used to have an interactive exploded section along w/the the parts numbers, but it has been a while since I have been there, it may have changed.

If it were me, I would just grab a set of oil seals that are listed for the '88-'95's, they should be the same. If for some reason they don't line up right just take them back.

More than tread lightly. Leave it like you were never there, nor anyone else.
'90 X-cab 4.88's 33 BFG AT's, rr ARB, Headers, Ignition upgrade, cold air induction.
'91 X-cab 5.29's 315's BFG MT's, rr ARB, custom bumper and flatbed