i have a 1985 f250 with a 6.9L I.D.I. diesel that is 2 wheel drive and has a 4 speed manual ranny. i want to put my buddy's 7.3L powerstroke motor into it and do a complete motor swap. i was wondering what it would take to pull off this swap and what i would need to do. i would really like to keep the manual tranny and was also wondering if the old for manuals would fit onto a newer powerstroke motor.