Hiya, i know there used to be a few Shorts Skyvans in Guyana , all on 8R reg. based in Georgetown, Also was a company Air Calypso in Guadeloupe but mate of mine told me few months ago that he thinks they have ceased trading????? They were on F-O reg. Dont know of many other Sheds there.
For Aeroperlas try
http://www.pananet.com/aeroperlas
Cheers Hogg