2wd to 4wd
 

I have a 90 F250, 351, auto trans, 4X4, standard cab. I have found a nice 89 F250 2wd extended cab. The truck had a 460 ( motor is out and gone). I am wandering if anyone knows if the 89 can be converted to 4wd and 351 using the 90 as donor. Does the 2wd frame have the mounting holes for 4wd components? Will the 351 motor and trans mount in place of the 460 and trans?
Thanks