In Reply to: What are the differences between a 2800 vs. 3.0 posted by Patrick on December 08, 2001 at 01:47:14:
Body is the same
3.0s have inertia reel seat belts
2800s have ZF manual transmissions, 3.0s have Getrag. All were 4 speeds. Not sure about the autos, I think they're all ZF and they were all 3 speeds.
2800s have rear drum brakes, 3.0s have disc
The later the model year car, the more likely there will be things like air conditioning, sunroof, leather, power front windows and auto trans (shudder). Most 2800s I've seen have manual front windows.
Bumpers were the same design, but were extended a couple of inches in '73 and the infamous new bumperettes added. In '74 the big bumpers were added to comply with the 5 mph federal requirement.
Also in '74 the steering column was changed to telescopically adjustable and the turn signals were changed from the right stalk to the left, a smaller steering wheel was used, along with some other interior changes.
California owners have to worry about the extra smog equipment put on the '74 models.
All the above pertains to U.S. cars in their original configuration. Lots of 2800 owners have upgraded the rear brakes and there are quite a number of engine transplants from newer BMWs.