I remember all the windows were protected with that white plastic or whatever it is the Yanks love to use when storing aircraft, so they might have some life left. They didn't use them for long, so the airframe hours are not likely to be high, but they were stored outside. They all had the 'chin' radar so thats why I think they are the Customs aircraft. The drug runners in their Barons and C402's would have out-run them with ease.