There was an upholstery shop in New Orleans that did a good job of replacing the vinyl windows in convertible tops. I saw some of his handywork at the BMCNO show last year. Unfortunately, I haven't a clue who he is. Just know that the guy showing his car was a black guy (don't even remember the car type, maybe MG [they are often forgettable]), and he said the repairman was a creole gentleman in the city. That's all I know.
Bill