Playback Tach's

In my challenger I have a Sport comp Playback tach which also has a intergrated shift lite. They don't make that model anymore.
For the Dart I'm building I have a standard sport comp tach,
AutoMeter Sport-Comp Series Tachometers 3780
Autometer makes a Shift lite controller w/ rpm playback module I could use along with my existing tach. It's about the same price as buying a new playback, just wondering if anyone has used the module?
SHIFT LIGHT CONTROLLER, DIGITAL, W/ RPM PLAYBACK, DPSS LEVEL 3


Thanks gary