I have been told that there is a difference between the 3dr and 2wd saph front hubs. Its something to do with the lenght/height/angle of the hole for the TCA's and the pivot arm for the steering rack.
I think Mike rainbird noted it on a post a while back.
The diff between all 2wd and 4wd front hubs is the offset, rears are the same as far as i know.

Someone else should be along pretty soon with a better explanation and to correct me no doubt .


Mart.