Here is the section I mentioned about Ken Miles running the Cobra at Lakeside, it is out of the book by Wallace A. Wyss "SHELBY The Man. The Cars. The Legend"

In 1966, Ken Miles suckered an Australian reporter clad in a dress shirt, slacks and tie, into taking a ride around the Lakeside circuit "down under" in a Comp 427 equipped with a low cut racing windscreen for the driver only. The reporter enjoyed the ride but by the time they returned to the pits, the reporter noted his shirt had been ripped to shreds by them going 140 mph in the open car!

The article when I reread it tonight confirms my thoughts and Pallmall's recent post that it was indeed a Comp 427. I've checked my Shelby Cars in Detail book and it does mention CSX3002.

Only one 427, CSX3002, was raced as a Shelby American team car, and even then only a few times

It doesn't mention if CSX3002 still survives?