Going to Build 470 Street/Strip Engine for 71 Demon

I was looking for 270s but i quess there are not many options for intakes for lowdeck with Max wedge port size? I know, Indy makes singleplanes but is there any tunnel rams? I assume that custom cam would be great choice specially with tunnel ram?

Drivetrain will be 727 transmission with reverse manual valvebody etc. + Dana 60 rear.