Dirk,
My opinion on this car: view it as a roller parts car. 3K seems to be a good deal for a roller. Drive it until the engine pops. Then sell it for parts. You'll probably break even, and if you are lucky you get several months, perhaps a year, of driving enjoyment out of it. View that as a bonus.
DO NOT put money into it, trying to restore it... you will not get that money back. There is too much wrong with this car to justify fixing things. Don't fix the RMS. Don't install new shocks. Don't retrofit the IMS. Make sure the brakes and seat belts work
Remember, it's a parts car that also happens to run and drive.
Of course, just my opinion.