Dual Plane Intake Question on Magnum 5.9

I know Air Gaps are considered a good intake for a carbed Magnum. My build is not super hipo...just a street cruiser with a slightly lopey cam...weekend cruiser. Are there any dual-plane options that work from idle to 4500 or so. I'll probably mostly be in the 3-4k range and don't need the high end power. Would a 4 bbl M1 work better for me? Don't want Chinese Crosswind if I can avoid it. Also wondering about tall manifolds/car/air cleaner height as I am putting it in my 73 Challenger with...

Dual Plane Intake Question on Magnum 5.9
Author: Tom Frost