Sorry to hear about your Uncle.
That car is probably worth upwards of £5K even in that condition. Assuming there is a bit of rot in need of repair and so on.
I am jealous. I nearly bought one of these a few years ago before I got my E30.
Looks amazing! Not much rust at all given the age.
Lol, you clearly know very little about old BMW's. You can't tell anything from these pictures, for all we know it might be rotten as a pear.
@DampCat you won't truly know the condition until you do some digging, the majority of the troublesome areas on this era of BMW are hidden from plain sight.
You need to take off the front wings, all plastic trims, side skirts, arch liners, and so on. The seats and the full carpet, the boot trims, the headliner (if it is a sunroof model), and go over the whole car with a fine toothed comb.
Check the sills, the inner sills beside the fuel tank, where the inner wing meets the bulkhead on both sides, where the inner wing meets the flitch trays on both sides, the firewall to the sides of the heater blower motor, the boot pockets, the rear arches under the arch trims as well as the inner arch just behind the arch lip, the rear inner quarter around the fuel filler hole, the front footwell corners as well as the drivers footwell behind the pedals, the corners of the scuttle (and under the windscreen rubber if you have the tools to remove it) the floor where the fuel breather pipes are screwed in, the roof where the sunroof casette is bonded and the sunroof drains. I would also check the fuel tank itself, the upper half and the lip which bolts to the chassis of the car, as well as the metal fuel filler neck.
If it has spent the majority of its life out of the rain under a car-port etc then I expect it won't be too bad, but if it has never been welded I would be very surprised if it doesn't need at least a tickle with a welder on the outer sills and perhaps the boot pocket corners.
I wouldn't even think about spending £800 on an exhaust until you have checked all of the above and carried out the necessary repairs.
In 2017 my E30 looked like this, and it even had a proper MOT:
When I took it off the road to go through the above steps I found that it needed an inner and outer arch on the passenger side rear, two repairs to the drivers side outer sill, a complete passenger side outer sill and one repair to the passenger side inner sill, both rear boot pockets, a repair to the rear valance around the towing eye, repairs to both front footwell corners, two new front wings because they had rotted behind the plastic sill covers, repairs to the flitch trays, the scuttle corner on the drivers side, and more besides.
