Anybody swapped from an airgap to a victor on 360

Agreed, and whenever I look at a TM5, I imagine a lot of people had the same experience with it. I have heard people even say that DC/MP had in some the engine manuals at one time not to even use one, but haven't seen proof of it myself. IMHO, if your going fast enough for a single plane to make you go even faster, you should be able to afford a more modern intake anyway, or at least one with sweeping runners and no pinched ports at the intake flange.