If you wanted to do something with your head, I have 2 complete top ends on a shelf (pre 2011) one is already hand ported by a friend of mine. I do not have any dyno numbers on the ported head but, it ran really well on a setup similar to yours.... I'm sure we could work something out if interested.
734 09 Raptor
Meglodon by Bo,KW springs Ferrea valves , Web 4 Cam, 54mm TB, 105.5mm CP cylinder, 14:1 CP, Barkers Inframe, Dynatek Coil, PC V, Dynatek Programable ignition
CCP stabilizer,+5 swinger,Boss Noss Sys, Direct Drive Lock-up, KDS Evac valve,HID Light conversion,SPAL fan
Tuned by EHS Racing 78hp 55Tq