Caimens are awesome and I've wanted one for years but unfortunately up until recently they were fairly uncommon in pet trade and very limited info on them anywhere. Reptiles Magazine did an article on them in the October 2000 issue if you can get you hands on that or access it online. This http://www.sanguefreddo.net/sauri-an...anensis-2.html is probably the best article I've found online. The site is Italian(I think) but if you scroll to the bottom of the page you will find a very informative article in English.
Good luck with them if you decide to get one from BSR and make sure you post plenty of pic if you do. I just can't get enough of those guys.