indeed.
the main diferance i believe is basicly just the housings. they seem to be better designed for high boost aplications i think.
but... i dont know about you i dont really wanna be running around on 2 bar boost. especally when its waring out stuff alot quicker than on the nice 1.2 bar setting.
rebuilding/freshening up a rb26 isnt something i wanna do every 6 months lol