I talked with the DBA factory this spring about their rotors. The ones that are offered are GOLD painted, slotted & drilled. There are USA distributor(s) for the brand but demand is low.
Another option is EBC (European Brake Company). They offer a black oxide-coated rotor that is slotted and "dimpled". It is not drilled, but looks like it is. Rotors and pads are available for 4-wheel-disc PTs!! I talked with a USA ECB distributor about doing a "Group Buy" to get a nice discount.
Is anybody interested in this? I'm not solid on pricing yet, but demand starts here.
IMHO, it would be [
] to replace junque brakes w/ junque brakes. The aftermarket is here to make us
