I am not trying to Frankenstein anything. I have information that the Volvo s60r four piston front brake calipers and matching rotors and pads will directly fit. I just wondered if anyone had tried that. Also doing research some people are saying they upgraded that Volvo s60r with Nissan 370z front brake setups. It was all bolt on stuff no Frankenstein about it. I will do what I can to get more info posted, hopefully someone chimes in with experience.