I'm not anti-EFI I'm just relating what I've seen with fairly radical street motors and that is that these trick EFI systems often don't seem to work all that well, or at least not without a lot of fussing with them.
Car makers all run modest cams (some with variable timing) and have bazillions of dollars (or at least used to
)to get all the bugs worked out.
Hope you get it figured out, it's a beautiful car and I'd like to see it out at the AZ Cobra meets.