I am interested in a late 80's 5 series and do not know much about them. I have spent most of my time on my 2002's so any pointers on which to look for and what to watch out for would be helpful. I am located in Southern New Hampshire and would be interested in hearing about any 5- series that are up for sale in the New England area, I would love an M5 but the price is keeping me away. Thanks, Joe