Here is my post on the Big Coupe Group on the difference and doing a swap.

http://www.normgrills.net/bcg/Tranny_Clutch.html#Anchor-Transmission-49575

A lot of the mechanical systems on the E28 are the same for the E24 (electrical
is different).

Gene M.

--- In bmwe28@..., Douglas Mancini <douglasmancini@...> wrote:
>
> What;s the diference between the 265 and 260 gearboxes?
>  
> - D