Hey guys, I've tried searching here and the e46 forums but don't seem to find a clear answer so thought I'd try asking you all...if there's a link please feel free to post directly.

What is the OEM replacement for our ZHP brakes (presuming there is a difference between the ZHP and std. sport editions)? Tirerack.com is the only place I've seen them allow you to input the 330i performance package vs. just a 330i.

What is the consensus on blank, slotted, vs. cross-drilled rotors? How about Pads (I see Hawkeye mentioned favorably)

Is an e46 M3 system worth/easy doing? (The Brembo 135i seems too involved)

Though I'm in no immediate need, I would like to evaluate braking options (rotors, pads, ss lines) that are better than OEM preferably within a reasonable budget (i.e. around $500 give or take)

Thanks in advance!