I've seen the RZ Front Calipers popping up and not sure which other 330mm rotors I could use in place of the Mazda OEM ones. I've searched and haven't found a solid answer. Not needing a crazy expensive 2pc rotor, seen some Mitsubishi or Nissan OEM combos. I'm looking for slotted/drilled as well. Can someone help me out?

 

I just bought dixcel 330mm rotors for the FD from rhdjapan, the pair I bought are slotted, they sell numerous types. I believe mazda motorsports sells the OEM ones if you have an account.

 

RZ brakes are 314mm in diameter and 32mm thick.

There are loads of aftermarket options out there. Dixcel is quite popular. Project Mu and a lot of the two piece designs tend to be prone to cracking from my experience, personally I've stuck with oem Mazda discs on the front.

The RZ discs are a lot more expensive than the smaller oem discs unfortunately.

 

Also seen the 370z 320mm Fronts used in conjunction?