im not 100% certain but if i remember correctly, the FJ80 and FZJ80 is practically the same thing but the year models are wat make it different. The FJ i think is from 90-92 and the FZJ is 93-97? im not sure of the ending year model on the 80 series...
Like i said im not certain so dont quote me on this since my friend has a '96 FZJ80 and we've had this discussion after lots of searching but its been a while so cant remember for sure.
EDIT: well Elton beat me to it...