the real benefit might be cheaper and more available axles..
Ta06 ball diffs work really well with the 503. Better quality than the older 501/db01. Its good that we have parts from touring cars. (altought many of them need some reinforcing, like the gear diff needed)
Does ayone know if there are same dimension ta06 steel ball diff outdrives? The alloy is really nice but seem to wear fast in the rear, even with blades.