This car did require a number of modifications by ERA to fit the blowers and auto trans. I happened by Dewey Street shop when it was being built and watched Tom Portante fabricate the "blower" hood. Fascinating to watch him work. He's now at Sikorsky fabricating "Jesus Nuts" for Marine Helicopters...
Here's Bill Cosby's routine on his Shelby experience:
Bill Cosby 200MPH - YouTube
Jim