Check out Autometer's website at
This place
they have several solutions...
I like the roll bar mounts, but they also have pedestal mounts (bolt to dash, or pad, or hood for that matter), fixed mounts for the same style mounting, and gauge cups for that extra special look ;D
Also remember that you can go the Summit Racing online and order just about anything from autometer at a good price.
Let us know what you decide....I'm just about to install a tach also.
Mrcat88