What size wheels do you have?
I think the wilwood brakes are super fly but they're mucho $$$.
I upgraded to some cross-drilled/slotted Brembo rotors (stock calipers) and I'm quite happy with them. I run nissin pads, btw.
I've seen Type-R upgrades and stuff on Ebay, but I'll bet you that Brian Wong (bwsf@hotmail.com) has them/can get them.