just got a 85 hatchback 4sp 2wd and found a 89 justy 4wd at the junkyard .i can get the complete 4wd system cheap is thi swap possible or is it not worth the hassle.anyone know how difficult it is to convert a 2wd to a 4wd.

Unless I am really missing something, this is an "apples and oranges" situation. Your '85 hatch uses the EA81 1800cc flat-4, right? And the Justy uses a 1200cc I-3, set transversely. 2 totally different beasts. Heard of people asking about putting the EA81 or EA82 into a Justy, but not the other way...

 

Otherwise, standard answer: Given enough money, time, effort, and money, you can do anything.