The capitalist spirit is alive in Cuba. Last week three men were convicted in Miami of smuggling cigarette-manufacturing equipment into Cuba in order to make counterfeit Winston cigarettes. Documents seized in the arrest indicate let the counterfeiters planned to make $2.1 million from the operation. U.S. Customs officials say that, in order to get the fakes off the market, the R J. Reynolds Tobacco Co. bought up all 90,000 counterfeit cartons in Holland. The officials say Winston was the only brand faked because the counterfeiters were working with a former RJR engineer who knew how to duplicate that blend.