tell me about BMW 6 series

sorry for being late to this, I'm playing 4page catchup at the mo
right, e24's
basically three types
1) the first gen. with the convaluted rubber bumper sides (rear only). like this

came as a uber rare 630 carburettor or 633i. 630 could have a 4 speed box, but most were auto or 5 speed, 633's were all 5 speed. the 5 speed being the bullet proof getrag split bell housing box, which command £350-500 as they adapt-fit chevy engined kitcars and e-types. later came the 635 with the e12 m535i engine, it could also have a dogleg 'box. something like this

2) next came the facelift with slim chrome bumpers and face lifted front end. like this

in 2.8 and 3.5 flavours, 2.8's used to be as expensive to insure as 3.5's.
these were based on the e28 platform, but 1" shorter in the wheelbase. steer clear of metric wheels, 415 tyres look great until you have to spend £180 a corner on boots
3) highline. last of them, most had black exterior trim. many had leather recaro's, some being electric. stitched leather everywhere, dash, headlining etc.
special molded bumpers signify a highline, also they have smiley/bullseye headlights.
they look like this


problems;
check for rot everywhere, built by karman seems to mean they conracted vw rust disease.
fuel tanks rust, but they are the same as e28s (later cars anyway).
70-80% of the car is special to it, don't expect to get anything cheap or easy. fritz bits are the specialists, offering GRP front ends. wings in steel are enough to make a dubai prince weep. thankfully their saloon car origins make things on the underside readily available and not too complicated, axle bushes are the only real specialist operation.
late highlines can crack heads and blocks, but only if you are unlucky. if you need anymore info , just ask. I do repairs servicing and spare parts
ooh and I have a black 633 first gen at work, needs a new owner....