So......I'm being told that my tic toc tach that I bought ($400.00) from a well-known catalog (keeping names anonymous ) will not work with electronic ignition, only points. Also they can't be upgraded or repaired because they were made in China. Apparently the clock stem and knobs are different as well. I've called several reputable tach repair companies and been told the same. The trick is to use an original tic toc tach and have it upgraded for electronic ignition and it can be repaired if needed. Surprisingly this is the first I've heard of this. Any one else............thoughts...........