Nothing yet from MP, I have been waiting, but appears no end in sight waiting for Mp to make one.
Dayclona can build you one using a MP dual quad intake.Also Indy Cylinder Head has a six pac for the 426 Hemi, I just purchased one, it is a single plane design with a removable top so you can change it out with 2-4's or a single 4 bbl, I can't wait to try it.
Good luck let us know if you here anything.
Bob