has anyone tried using the holley terminator fuel injection system in a twin throttle body supercharged 1000 + hp set-up. getting my motors rebuilt thinking of getting rid of the twin carb set up to fuel injection .

I have done quite a few. It's a great investment.

I don't have the terminator but I do have the HP EFI on a twin turbo LS motor in my boat, I don't have anything bad to say about Holley. I believe the terminator works off the same tuning principle so it should work great.