Another look back in time. This is a Revell 1/24 USRRC Shelby Cobra body. USRRC because there are no FIA luggage bumps on the trunk lid. This body became the basis for many resin cast copies.
Since Revell was within walking distance of Shelby American finding a reference should not have been a problem and IMHO they nailed the body. You can tell it is a Revell by the windshield which was molded in one clear piece with the frame.
An AMT chassis and interior were added. The chassis was lengthened from 1/25 to 1/24 dimension.
IIRC the decals were by Fred Cady.