Adam, Thanks for the reply- any idea how the Stoptechs compare to 996tt calipers over 993tt rotors- aka BIRA S6x? Porsche monobloc calipers are exclusive to Porsche and they're one piece, no attachment hardware, less stuff to flex, far stiffer torsionally. I haven't seen the RS6 calipers, so I can't comment on them, nor the new AMG 8-piston setups. Taka