Tachometers compatible with revinator ignition

I have a couple of vintage 1970's tachs (Sun super tach and an Autometer) that do not function properly with the rev-in-ator ignition system and coil. I have tried both the wire from the box and direct wire to the negative coil side.
I have asked the revinator sales staff and they will not reply to the question.
What modern tachs will function acceptably if any? Are the Bosch Retro tachs compatible?