Hey Greg:
Their address is
www.rmlautomotive.com . These are actually the guys who put together the ignitions that IAP sells. Essentially, they do the custom distributor and apply and phase the optical pickup. They get their coils and ignition boxes from the same people that make them for Crane.
So far so good with mine. Super easy to setup especially with a degree wheel timing light. It accurately made the advertised advance by 3500 rpm. No valve rattle on mine so it doesn't seem to be putting too much advance too soon. All and all, I like it.
Best Regards,
John M