The external latches (best system), was discontinued here in the U.S. with the end of the first gens. The import bed was available with the second gens, but it had the center latch, didn't have the tie downs on the sides, and had the "Toyota" decal instead of the stamped steel.

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