That back part is more than likely fiberglass. Don't bump it against a tree or a rock. What are all those lights for? Was the previous owner night blind? Send us a picture of behind the front tires and we'll tell you if its older than 1985 or newer...
A guy in my town had one a few years ago pretty rare from what i gather. If i remembdr right some had turbos. If it where mine i would restore it it would mame a bad ass dd. Just my 2 cents.
They are like the 1st gen 4runner. Built by Toyota and then shipped to an aftermarket company and they add the extra length. They were ordered that way from Toyota. I can't imagine that limo would wheel very good though.