Like a few people already said, any online VIN decoder will only work with the newer 17 digit VIN numbers.
Thats pretty much from 2nd gen PU's, 4runners, and FJ60's and later. For the 1st gen PU's and FJ40/55's, and anything else pre-1981, the only thing the VIN will tell you is the model number and serial number. For more detail, you have to decode the numbers on the underhood plate.

I have dealer parts microfiche for the 1st gen PU's, FJ40/55's, 2nd gen PU's  & 4runners, and a few other Toyota models. There is a list on the fiche that breaks everything down.

An example is my 1st gen PU is something like RN37L-TMKR.  This is what will REALLY tell you more about the vehicle than your VIN.