Type of Boa? DUW

I just picked this guy up today...came with his home-made wood enclosure which I will include in later pics...right now I am interested in what kind of boa HE is...?
He is 5 years old and about 5 1/2 feet long. He is eating medium rats. Body pics, eating pics, and the best belly shot I could get...I am thinking Nicaraguan...just because he is kind of "dirty" in the pattern...but please let me know what you think he is...
PS...today was his reg. feed day so I decided to go ahead and feed him, he did great...even ate it after he dragged it into his water bowl and it was soaking wet....
http://i440.photobucket.com/albums/q...heSnake029.jpg
http://i440.photobucket.com/albums/q...heSnake040.jpg
http://i440.photobucket.com/albums/q...heSnake024.jpg
http://i440.photobucket.com/albums/q...heSnake039.jpg

Thanks for any input!
-JTGriff/Proud new boa owner...:D

He might be a Columbian BCI, I believe some of them get that color when they are older. I don't really know though, but that's a great looking snake!

Yep, looks like a normal Colombian RTB to me :gj:

My boy doesn't have as much "speckling" on his belly as yours I don't believe and I could be wrong but it looks like a normal to me.