Advice needed please. I have a 88' BJ70 RHD that I am contemplating doing the body work to. There is no fender rust but appears to be some around the bottoms of the side window frames underneath the rubber seals. Also looks like rust developing where the roof mates to the body side panels. I have limited body work experience ...is this type of rust damage worth repairing or would it be too expensive a job?, what should I start with?