This topic is on the V8Buick board. Very cool.
http://www.v8buick.com/showthread.php?283593-64-amp-65-3D-printed-Tach-and-Gauges-imagesThe post says "I am working on a new tachometer and gauge set that will fit nicely into the A/C vent location above the radio in a 65 panel.
The temp and oil pressure gauges will resemble the stock GM clock size, and will utilize Autometer Sport Comp gauges. The Tachometer is a Autometer 2897. Once I figure out all the angles I will have the display panel 3-D printed and painted."
For those who aren't V8 members here are the pictures.