I've embarked on a panel-redo, and I've hit a snag and need some advice.   My 67C had a shotgun panel that featured an EGT gauge and 4-cyl selector right in the middle of the panel.  I plan to finish my IR this year, and want a six-pack instrument arrangement.  The a/c has a Radair 4-cyl EGT with a single gauge and a selector switch.  The panel mount rotary switch is 2-inches in diameter, about 2-1/4" dia. with wires attached.   It is in the middle of the photo resting atop the TC.  The sin