1968 '340' Barracuda vs 1968 '383' Road Runner

Clearly 'Marketing',

Ford was far ahead of Plymouth especially in marketing and advertising.

The MSRP $ was relatively close for both cars.

Ford just had more $$$ focused on Television Advertising, and they had many more
Dealerships in the 'high-traffic' areas.

Honestly, with the 'low' production numbers of the,
1968 Barracuda 340 'Formula S' {3917}
1968 Barracuda 383 'Formula S' {1120}

These cars could really be labeled 'Street Sleepers'