I really don't think it's possible... There is perhaps 2-3mm reserve with my design but not enough for 60mm gauges. The problem is that there is no space left under the center vent. I hardly squeezed mine in there.
Basically, you just cut 3 oval holes in the vent piece and shape them so that the gauge tube sits in the way you want it. You then glue the 3 tubes to the vents and cut them so that the gauges sit in there. Here's a close up, so you can have a better idea what I'm talking about...
