Help me build a fast 440!

If your worried about "using" the lifter then go Hughes. They have "real" chysler cams.
I will not get into my opinion of all that and muddle the conversation.
As far as the intake fitting your going to have to do some measuring as it willl change depending on where the engine is located/ what mounts you are using. Edelbrock may supply carb pad height dimensions if you ask them. (They used to anyway)
Just figure out how much clearance you currently have and add the manifold height difference into the equation. Most fit but there have been nstances where they will not because of improper engine height.
Paul