when figuring how significant a car is by the owners and drivers, Junior Johnson and Mickey Thompson add a lot of value. Add the debut of the Mystery Motor, and it's historic significance is nearly monumental, then factor in that it's a Z06 '63 split window Vette

The Mystery Motor was the first Chevy big block... there was an initial run of 50

Mickey Thompson had prepped two 1963 Z06 Corvettes with Mystery Motors. No. 3 driven by Junior Johnson and Bill Krause, and No. 4 driven by Rex White and Mickey Thompson himself.

Full story at http://www.hotrod.com/features/1509-mickey-thompson-z06-mystery-motor-stingray/

For comparison, see the other '63 Mickey Thompson Corvette http://justacarguy.blogspot.com/2014/05/the-63-vette-mickey-thompson-raced-as.html