Best dual plane intake for 400 low deck

This is a zero brain effort exercise.

Cheap and easy is the HEAVY factory intake, then ether an easy to get performer or the older Edelbrock DP4B. The RPM will lack a teeny tiny bit of off idle torque. I found this on my 360. It’s nothing really.

What are your Hwy gears and tire size?
Are you sliding in a cam? If so, specs please!
The cam card would be awesome.

IMO, I liked a 750 on top of my ‘78 - 400 even though it was a very low compression engine. The engine and entire car responded very well to the increased primary size. No ill effects on mileage after tuning.