Did I just buy a 5th wheel?!?!?! What did I get into?

Been pulling 5'th wheels for 15 years with 3500 trucks. My parents had a half ton truck and were looking at a fifth wheel and a used car salesman friend told me they can pull anything that they feel like the truck will pull until they get in a wreck and the lawyers do some research and find out the truck wasn't rated to pull the fifth wheel. Go 2500 or 3500 and be safe for you and others on the road.