Am I missing something, or are all the Mopar M1 small block magnum to carburetor intakes out of stock and out of production?

I'll be dropping in a late model 5.9 and carbing it to get my Challenger back on the road ASAP. I want to be able to use the same intake for carb first, then EFI once I get the rest of the car converted up to EFI. Edelbrock's Air-Gap Magnum is not EFI-ready like the M1's are.