Misc. thoughts - this sounds like a nice car - but if you are not a proficient or at least enthusiastic, DIYer you shouldn't buy it. There is just too much maintenance on these cars and parts prices are going through the roof on account of our currency being worthless. $4,000 is too much for an 87 - even in good condition. Also, how much to fix those things is the wrong question - most of those things should not be fixed on a car like that. The car is headed to the salvage yard - it doesn't need to arrive there with a bunch of new gadgety and unncessary parts. Only the brakes and seat belt should be fixed - get actual quotes. BTW, I am assuming the rust is surface rust - if it's deeper than that you should not buy the car under any circumstances at any price. There's too many good cheap dry cars out there for sale.