Beauty snake id!

[Wyldrose]

I just picked up this guy this weekend, he was sold to me as a Taiwanese beauty snake and I have now had 2 different people ask me if he is a hybrid tai x Vietnam. I have googled both pure and hybrids, but so many pictures are miss labeled. He is from a vendor who imports and buys out wholesale lots. I thought I'd ask here and see what you all think.
Flash
http://i77.photobucket.com/albums/j69/Pharfly/006-63.jpg (http://s77.photobucket.com/user/Pharfly/media/006-63.jpg.html)
no flash
http://i77.photobucket.com/albums/j69/Pharfly/008-74.jpg (http://s77.photobucket.com/user/Pharfly/media/008-74.jpg.html)

[Corey209]

Taiwanese have been crossed with American rat snakes from what I've heard. Also I have read of interbreeding between these two and that natural integrades have occurred.