Keeping in mind you are dealing with a 32 year old trailer, you may have some work to do despite outward appearances. The first thing to go on my '87 Satellite was the hard plastic water lines. After our first trip, the greywater valves started to leak, and all the plastic bushings and pins in the suspension system had to be replaced. If your propane tanks have not been modernized, you have to replace all the tank valves and hoses with the new style. I would agree with Sunline Fan's assessment of around $1500, but I think I would not want to pay more than that. Good luck!
