whats the difference between a dana 44 and a 44 HD the reason i was wondering is i have a 94 f 150 that the front diff is fooked but i have a 82 f 250 with a 44HD that has a good diff was wondering if the HD would be just a straight swap

 

I think the only differences between the two are the outers and that the HD is set up for an 8 lug pattern instead of a five...other than that it should bolt right up....