I just got a 408W rotating assembly from a Scat wholesaler, Brian Adams (goes by "Eagle" on
www.corral.net, e-mail-
scatstroker@hotmail.com). I got Probe forged pistons, H-beam rods, a Scat crankshaft, engine and rod bearings, and everything balanced for just over $1500. Brian was great to work with - he could probably give you some good recommendations for your engine build.
Pete