My son has owned for some time a rather rusty but mechanically sound (at 160,000 miles) '78 320i which recently acquired some extra negative camber in the front alignment when he was crowded off the road by a nearly blind senior citizen in a Dodge Intrepid. He knows of an '82 E21 4 cyl. which he claims has no rust at all, but also is totally lacking its motor. He is proposing that I pull his '78 motor, give it a new set of rings, bearings, timing chain and clutch, etc., and install it, complete with its K-jetronic, in the newer body, keeping the newer body's catalytic converter in place in hopes of remaining smog-legal in a region in which the only smog inspection is a visual check to see that nothing is missing from original equipment. I'd be more inclined to look for parts to change over to the later model's type of injection, with O2 sensor and all that rot. Has anyone out there any experience to offer on this matter?