Port my current M1 single plane or install the RPM Air Gap?

The Engine Masters crew did a Magnum intake shootout a couple years ago, starting with stock EFI manifold then going to M1 on a carb, then RPM Air Gap on a carb. I took the following from someone else's forum post on ramforum.com:

"Now for the spoiler, and these numbers are directly taken from the Motor Trend/Engine Masters show. Stock kegger tq/hp (at flywheel) was 403/326, modded kegger 412/330, modded with big t/b was 414/337. The modded kegger didn't really help or hurt it anywhere in the power range - just SLIGHTLY better through the whole range. The carbed M1 at 410/350 started showing a little promise, and finally (what I consider decent results) with the Air Gap at a best tq of 425 and hp at 365, depending on spacer choice - a best of +20 tq and 40 hp over a stock kegger."

The engine is obviously way more tame than yours, with a mild cam, stock compression and stock heads. The Air Gap made 15 more numbers than the M1 on a mild build, so I would expect you would see more.

They also talked about carb adjustments they had to make after installing the Air Gap. I think they had to lean it out quite a bit to get it dialed in properly, so keep that in mind if you do the swap.