WTB 68 B-Body Non-Rallye Tachometer

I have a 68 Coronet with a 440 motor and electronic ignition. I am looking to add the non-Rallye tachometer into the location in the dash. Any recommendations on where I can get one that supports and updated distributor and ignition system? Also, I have one that doesn't work and I could send it in for repair and or calibration. Or is there something I can purchase and replace on the tachometer I have that doesn't seem to work with newer ignition?
Any input would be appreciated.

A reproduction is probably a better choice as it will work with your electronic ignition.
The originals only work with points.

There are a few places that will rebuild your factory tachometer & install guts that will work just fine with electronic ignition. "tachman" comes to mind, but there are others.