6.9l diesel into 78 F-250 ??

Any one know how well an International 6.9l diesel fits in a 78 250
i understand the radiator doesnt fit but what about motor mount issues?
any one ever done this or know any thing about it?
Thanks for your information

I wanted to do that to my 78 also.

theres a bunch of info on a different forum site that i use
www.thedieselstop.com