Whatever you do... Do Not Send your head to JG! My buddy sent his engine to them for them to build it (about a year ago this happened) and after the 6 weeks they said it would take he started wondering. He demanded his engine back and finally got it after 16 weeks! It was poorly and partially assembled, and there were iron shavings all throughout the block. He's not the only one I've heard of this happening to. Either Portflow or Ericks racing will be killer. They're super close to importbuilders.com. Now importbuilders does killer work!