Stumbled into Durametric website
https://www.durametric.com/support.aspx
They are a professional company answered by a human on the 2nd ring. Its now run by (only) the owner himself. His employee of 17 years retired last month. I had the pleasure of speaking to Durham, the creator and owner who is now in Oregon.
For the 968 all Ill need is the software and standard diagnostic cable totaling $379.00. Durham is a wealth of knowledge and a one man company. Im f he doesnt pick up the line or answer an email its because hes the only one running the ship.
He passed along a little tidbit of info that approx mid 93 Porsche added a security measure in the key that communicates to a module by the fuse box that turns off a kill switch to the car.
If you connect Durametric to these later 968 it will not communicate. The vehicle had to be running and/or turned off after that to shake hands with the software. Got an older version of his product that no longer works. He said hell help you grandfather it and get ya up and going again.