Best tank size for Central American Boa and RTB?

[Shaffer]

Looking to adopt a Central American Boa from a local rescue. Wondering what the best size of a tank would be for it (full grown)

Also same question for a RTB? (full grown)

[Pork Chops N' Corn Bread]

4' by 2' is ok in most people eyes for any boa up to 7'. I would say a 4' by 2' would be fine for an adult CA boa since they usually average a bit smaller

[Shaun J]

Not many tanks are that big. I would buy one from Boaphile or AP