so you factor in some welding, or a door skin, or a door if you can find one for a coupe. You can pick holes in it from your armchair, or you can get an inspection done (by a BMW specialist!) or go see it for yourself. They're thirty year old classics, a perfect one will cost you over $30k now, and if it's rare it'll cost you $60k. They all need work, it's a question of being sure what needs doing, and is it worth it to you.