Anyone running a Paxton on a 340?

I too have one of those Mr.Norm's Paxton setups that I want to use on a 340 sometime next year. I was considering using one of the efi units like the FAST EZ-EFI or Edelbrock or Holley offers instead of a carb, has anyone used one and how well did it work for them?

i've been thinking looking into this the past few weeks and it seems the problem with efi and a blow through supper charger is finding one that works with boost. the new holley system can work but it will have to be updated to a different software and says it can only handle 600 hp witch i could see being attained pretty quickly.