The latter wears the iconic Sox & Martin livery. Had it found an owner for $125,000, the B029 prototype would have become the third most expensive second-gen Barracuda ever auctioned.

Introduced in 1964, the Plymouth Barracuda did not get the iconic 426-cubic-inch (7.0-liter) Hemi V8 engine until 1970. However, Plymouth did produce a small run of Super Stock race cars with the ...