Thanks,fella's! Maybe I'm way off! Especially if Eddie's getting 460hp at the wheels with head work done! How much flow does the CNC work show @ .600-.650 lift? How does that translate in horsepower gain? Thanks,Eddie! Sounds like the RR's running great! With a little suspension work,sounds like a high-10-second ride! Ron,Raff got the same 500hp # I think he used the Moroso calculator,also! Thanks! RandyB