I'm currently using LS/GSR size Powerslot rotors. Will the ITR calipers bolt right on or do I need to get the ITR size rotors?

 

you might as well go get the willwood kit, the calipers are like 130 each from Acura with core, then you need to buy ITR rotars and redrill for 4X100 then you need to machine the mating surface of the cliper so that you get the correct offset for the rotor. I did it, but better to buy willwood.

 

I found a set used that I'm interested in buying. I can probably get them pretty cheap. I was hoping that there wasn't too much work involved and also I would like to keep my fairly new Powerslot rotors, Endless NA-S brake pads and Neuspeed SS brakelines. I guess I can still keep the Neuspeed brakelines even if I went for either the ITR or Wilwood kit.

BTW, is there any company that makes ITR size (~11") rotors at 4x100 to fit the ITR calipers instead of getting the ITR rotors and redrill them to 4x100?

Also, does Wilwood have a brake kit so that I can still use my 15" rims/race tires for road racing?

 

Fastbrakes.com has the ITR rotors already drilled. As for aftermarket ITR rotors that come in 4 x 100, NO. That is too specialized for any company to do and still make money.

 

I guess Fastbrakes is the best choice for now.