Technically, the intake manifold is dual stage, because the high lift cams stay the same from the initial VTEC engagement all the way to redline. The only thing that changes is the IM. Your numbers are a little off too, 4.4k and 5.8k. But you've got the idea.

If you switch out the IM for a single stage one, you'll get an engagement like a B16 or B18C5. It'll engage earlier than those though.