I've been looking at this as well. The Eddy unit was my first choice. Then I found the Hilborn multi stack unit (very cool, but ridiculously expensive). Then someone posted a link to a video of the new FAST EZ EFI ver. 2. After watching the video, it looks like the only way to go. Controls timing if you run their distributor, can run multiple throttle bodies, has provisions for nitrous. Costs a bit more initially, but you get what you pay for. Frieberger put it on his Super Bee and it performed quite well.
