does any body know the difference between a dualy rear end and a single wheel diff? does a 14ff from a p30 dualy would work(length ,spring pad,etc) Around here they are getting reel hard to get . Just have to forget the junk yard because they want to rob u (they ask 600-850$ cdn each.But they are stuck whit the p30 ones. Dont even think of going to d60 up front (would have to get a third job!!!!!) so any guess???