Shane, i broke our STD box coming out of turn 9 at Eastern Creek...dont be fooled into thinking that circuit racing is kind on cars.
Ill give you a quick rundown on what you NEED (others are wish list)....rebuilt RB26 Cryo'd block, rods and crank. Aries forgies (my fav.) N1 oil and water pumps, tomei 260 cams, head gasket and sump baffles, ARP rod bolts, HKS 2530 turbo's and dumps, SARD 700cc injectors and reg.
On the clutch....I know ORC make killer clutches but....at your power i think the Jim Berry item is right there for value and performance against any clutch you care to name. (i know thats a big statement but trust me on this one)
Paul
EDIT...sorry Shane...just realised your running an RB30 bottom end....change the turbo's to HKS GT-RS's and the rods to Argo's