93-94 T100's have the the 3.0L V6 with the 8ft bed, and in 95 you could get the 3.4L V6 with 8ft bed. 96+ only had the 3.4L in the extended cab models.

I have a 4cyl too and the OEM tire size is 215/75/R15. There was an optional 235/75/R15 from toyota, and others on here have said the 215 and 235 use the same rims, so I think eventually I will go to 235's so that I can load a little more weight in the bed (215's don't like it when I have a cubic yard of sand in the bed).

I also have a 95 4cyl 2wd long bed, but I have the w56 5-speed smile