CNC-Dude
What?! I had no idea that a 12 port head was made by Kirby! Do you have any info/links on where I could find out more about it? Sounds like a much better route to take rather than trying to fuss with a hybrid head (although a cool idea). The Multiport EFI would also work MUCH better with 6 individualized int ports! I'm sure it'd also make tuning the EFI and turbo much easier too! Any recommendations for EFI (kits/swaps) systems?
Also I read that you're a CNC machinist from your profile, any rough estimates on costs of the machine work/mods that Leo recommends in his Power Manual? It looks like quite extensive machine work...