The short answer is NO.
However, LMC and others sell patch panels to handle any area of yours that needs fixing. Inner tubs are now available in the correct design. And you could always cheat and buy a complete stepside bed for your truck. But then it'd be ugly wouldn't it. (JUST kidding all you stepsiders) Fleetside tailgates are repopped in Chevy and GMC flavors. I have a GMC repop and it is flawless. There are 2 guys in particular on this board who have a huige selection of 60-66 parts and would be glad to help you with original sheetmetal. Look for RJ and Colettesbro in the "parts for sale" section of the swap meet heere on the Stovebolt page.