I wish I lived in Greenville, Jeff has three project/parts cars now.

We have a data logger in the lab that I could use to record what is going on between the SKREEM and PTCM/ECM. I cant program microcontrollers like some of my co-workers, but I have access to them as a resource.
It seems to me that one of these could replace the SKREEM (but not provide OEM capability, just provide enough to start and run the car without the original SKREEM and RFID in the key):
https://www.arduino.cc/

Adapting it to the CAN bus, i thought, would the the show stopper, but I was wrong - one of the guys in the lab says it has been done in other cars (but not to get around security, tho that is not the point).

This IS do-able, but I don't know enough about what is going on between the two modules. I think one of the GOOD tuners (Thinking of Josh or Rudy here) may be able to get around this.
But if we think the work around is a plugin module that will cost $79, we have another thing coming.

Perhaps for $500 it would be worth the effort... not sure.