I have a 96 XLT with a 5.8 engine. I have had this Bronco since new and it has 150K miles on it. I am wanting to take care of a couple of maintenance issues as I plan to keep this for a while. It looks great, runs great, transmission shifts smoothly, rides fine. I want to have the rear main seal replaced as the leak seems to be getting worse. What would be a reasonable cost to have this done? Would it be a good idea to replace the u-joints due to mileage? I also plan to have the transmission filter and fluid replaced. Is there anything else I should have taken care of while it is pulled apart?