For the 2" vacuum gauge...go to your local home improvement store and pick up a two foot length of 2" PVC (usually only $2). That gauge will slid in nice and snug, then you can cut the tube to any angle and attach it to any surface in the car. Paint the PVC to the color of your choice, and BAM!, done and clean looking. I did that for my three gauges that are now mounted in the center console on my VX. You could even look into using the 90° pieces and other angles to make a really neat custom mount. Heck, bring in the tach with you too and see if there are some 3" PVC pipes that can house it as well.
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