Yes, absent it being shipped in from Japan after the end of the '83 model year, it would have to be 1st gen 4x4 or older 2wd tailgate. The mid '70's 2wd Toyota's had the stamped gates and IIRC, even the Stout has "Toyota" stamped in the tailgate.

Here is a pic of two import beds(as was the designation for the '84-'88 models), the one on the left was available for '84-'88 models, and the one on the right was pre-'83 models.
[Linked Image]

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