TWISTEDSIX wrote: The door latch/strikers are completely changed as are the doors...they don't swap.
Actually, some do. I have a 72 240 with an early (probably 75 or 76) 280z passenger door. The door is a bit heavier than the 240 door, and has the same door latch as the 240. The majority of the 280Z's do have different door latches and are not interchangable. I just lucked out and got a door from an early enough model that the latch is the same. The main difference again is the weight due to stronger construction, and on the majority of the 280 models, the difference in the latches.
Then of course there's the heavy bumpers and mounts on the late 260's and 280s. Different turn signals, Tail lights, 2.8L motor, Fuel ingection, EMISSIONS EQUIPMENT and lots of other little things.
The first gens are all BASICALLY the same, but there are lots of little differences from year to year.... There are even a number of differences between the 70 - early 71, late 71 - 72, and the 73 240's. There are also two versions of the 260Z, and a number of very small differences in the 280z's(such as the change in door latches).