Diesel conversion
 

I want to put a diesel engine with a fuor speed auto tranny in a 1968 280 SE.
Beeing used to old Chevys, where you can swap engines between cars very easy, cause the v8 looks the same from 1957 to 1997, I got some questions:
Will a (for ex.) a 1985 300 TD fit in the car? Whats the difference in motor mounts etc? Is there a "better" engine to put in? Any tips are welcome

Its been done so it should fit. I posted pics of one before, you can see them here: http://www.peachparts.com/shopforum/diesel-discussion/116899-1969-280sdl.html?highlight=280SDL