Has anyone installed a repro tach in a '67? What do I need to do? How easy is it to wire?

I am considering the following options:
1. repro tach, getting a 3 gauge cluster (2-5/8" or 2-1/16")from autometer with a. water temp, oil press, fuel level

2. getting a three gages cluster (2-5/8" or 2-1/16") of a tach, water temp, oil pressure

anyone?

You might have better luck with this question in the "Electrical & Wiring" forum.

What combination did you end up going with. I was considering the exact same setup.