408 on dyno, what will it make?

Since I plan on running a good converter, hopefully 3800+ stall, does it matter beyond curiosity? I didn't think so, just need to tune the age for cruisearound 2500 to 3000 rpm.
I don't know much about the Airgap other than it is supposed to be a step above the performer as it's performance range, and it sure looks like it works! I picked it over a single plane for better mid range torque and response, and got a nice power curve that is strong all the way to 6000 + rpm.