Went to a junkyard today, they had some drummed 14bolts, but they looked up codes and said it was off a van and one off a truck, and niether had posi or something, only one wheel turned. Well I always knew that as being locked, but then what is full float (ff) and what ever sf is? How do i tell them apart? And also they wanted 250 for that axel, then for a d44, with out the hubs (the things with the lugs attached) for 250. is that reasonable? Is there any good literature around the net on this topic?