Should I swap intakes

I don't know anything about 440s.

Still, I have an opinion.
The AG on my 367 was dynomite as a DD/streeter with a 292/508/108 cam, especially as I swapped down from bigger gears. Mine was a stick car. But at 3.55 things got doughy off the line. It was just too much cam for my driving style and 3.55s. That cam pulled to 7000 or more through the AG and a 750DP.I wanted to hit 60 and be outta revs.That would take 3.23s with my combo, and the 292 was having none of it with the 3.55s already. I got rid of that cam. Different story.
The AG seems to be well-respected in this community for it's ability to cover both ends of the rpm spectrum. They say it's actually better at pulling up the lowspeed torque while not giving up anything at the top. The 292 may be the top of it's comfort zone, and since you have way more torque than you need at the bottom, for your stated purpose, I would tend to think that this particular swap would be a wash for you. No wins,no losses. Well except for fuel economy. You may be able to lean out the lowspeed circuit some with the AG.
The AG was my 4th manifold purchase; and there's no going away from it for me. It has been on there now thru 3 cam swaps 2 carbs, many many rear gear swaps, and all of Ma-Mopars A833 iterations.
It just does everything.
Remember, this is on a 367