IIRC, most of the 1st gens('79-'83) only had a std. bench seat, and I think the buckets were only offered towards the end of the 1st gen.'s run('82-'83). The '84-'88's came w/3 types of seats, the std. bench, the bucket back bench, and bucket seats. I know the bucket seats were part of the SR5 package, and I think the bucket back bench were generally part of the DX package, and seem to be more rare.

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