The Shelby setup use all the stock GM sensors. They added one more. It is a Rough Road Sensor. It as a G sensor mounted Verticaly.
The 99 uses the stock crank and cam sensors. It used the stock coils.
The 2001 the Shelby Series II used the later style engine with 8 coils and the newer cranks sensors. This car was just a prototype, so I can't get my hands on the Cal ID.
I have a 2000 crank sensor a mapped out, but I have a raw mechanical version, not the electrical version yet.
Anyway much of this is