While its sometimes confusing, generally Colombian's sold in the pet stores are Boa Constrictor Imperator while the true redtails are Boa Constrictor Constrictor. BCC get larger than BCI. Your best bet would be a male Colombian which should get right in that range while the females will be slightly bigger. I have a female BCI that is 8+ feet. Hope this makes sense!Originally Posted by Swizzle