Wow, I'd like to hear John check in on this as well. Sometimes it's hard to stomach up to the bar and square up with customers.
In the google link mitchell posted it stated reams of contractural assurances.
So if this high quality chrysler licensed part had enough orders the tooling was going to be built.
Until John produces parts from the tooling he holds and sends parts he would appear to be in default. If he holds no tooling then those that paid a deposit appear due a refund.
Simple understandable contract that mitchell states has not been fulfilled.
I highly doubt anyone would risk litigation for slander and I think op has every reason to either expect a part or full refund.
I'm also