I have a 2 1/16" Z-Series Boost/Vacuum Gauge.  The two studs that are on the backside have been cut off to leave more room when installed in a pillar pod.  Overall the gauge is in perfect condition.  It is a full sweep mechanical gauge which a range of 30Hg to 20 psi.  you can go to Autometer.com and look the gauge up.  It is part number 2601.  It has a black bezel with a black face and white numbers.  The only thing you will need is the nylon or metal tube that comes out of the back of the gauge and the T connecter for your vacuum supply if you do not run it directly into an engine vacuum source.  I actually think I may have some extra nylon tube if need be.
Asking $40.00 or $47.00 shipped.
Giovanni
201.523.0591
G.Araneo@gmail.com