Chad would also be my first choice for Hog Islands. He is amazing! I bought my Angolan python pair from him and was very very pleased with the transaction. He is very kind, informative, and professional. His website: http://cdreptiles.com/ But be aware that not everything he has is listed there, so if you're looking for Hogs, email or call him.
Vin Russo is also fantastic, but I am not sure he's working with the insular localities any more. But I purchased a pure Sao Paulo BCA from him in the fall and there is NO ONE better to work with!
Legacy Reptiles is another good resource, but like Vin, I am not sure if they have the insular localities.
Gus Rentfro's website is down now because he has taken a sabbatical from the boa business for personal reasons. He was always helpful and had some excellent pure localities, but he is no longer breeding. You will probably have the quickest turnaround with Chad Duggin.![]()