Although Sox & Martin ran a 426 Hemi-powered Belvedere sedan in NHRA Super Stock Eliminator, they fielded this considerably more radical '66 Barracuda coupe in match races and AHRA heads-up competition. The Barracuda featured an altered wheelbase, gutted interior with full rollcage protection, fiberglass front end, a straight axle front end, American magnesium five-spoke wheels up front, and Keystone Kustomags on the rear with M&H Racemaster tires. Power came from a Jake King-built, 426 Hemi running Hilborn injectors (note the long intake stacks protruding through the hood) on heavy doses of nitro methane and alcohol fuel. The toothy Barracuda painted on the door became a S&M trademark. Sponsors were scarce, but included Gate City Motor Company, a Plymouth dealer in Greensboro, North Carolina; Doug Thorley, who built headers to fit the car at his California shop; and the Hurst Corporation.