I'm trying to find out if the rear axles from a 2015 scat pack will fit on a 2014 R/T. I just found out they have different differentials while I was researching differential braces. What I learned is that the 2015s and newer need the differential braces with boost, and the 2014's do not. I know that the scat pack axles are a lot stronger than the R/T axles, so I need to find out if I can do this swap, or if the splines and such are different.