Who owns the 68 Plymouth Barracuda Super Stock mule car ?
FWIW, the Motor Trend Jan 1968 test a red 340 Barracuda fastback that is auto, AC, white deluxe interior.
Car Life Dec 1967 seems to test the same car.
Car Life and Motor Trend were Southern California based magazines.
The August 1968 issue of High Performance Cars magazine tested a 340 4 speed fastback and 340 4 speed coupe. There’s a color picture of the coupe showing it’s red. The black and white pictures seems to show both cars in same color. The 340 4 speed fastback is white deluxe interior, rallye wood dash fascia, wood grain steering wheel, light group, bumper guards.