Congrats o the GP. I'm new to them too but I can tell you one thing. They are easy to modify, no matter which way you go. Turbo, supercharged. Two of my friends have had there's for years now and the mileages are up there but still going. As far as the eaton goes, I can only tell you from two experiences. One was from a ride in a Fiero with M90 3.8, wicked machine. The other is from my car 2003 cobra "Terminator". It's got a ported eaton and I'm very impressed with just that. Its not same blower, but it's an eaton too, M112. I think it'll all boil down to what you're looking to do. I don't know about the compatibilities of the L67 yet, but I know it's plentiful. So good luck on your quest and continue our research. Lots of info on these forums.