Wisconsin chassis dyno

I got the names of a couple, was just wondering if anyone had any good/bad experiences with them. As far as the Mopar thought, I run a mopar electronic ignition, and not sure if there is a difference in changing advance rates and other settings.
Thx
is it a adjustable CDI style? Or factory Mopar stuff? The factory Mopar stuff doesn't control timing, that's all in the distributor