Housing Red Tail Boas Together?

A friend is wanting me to adopt her 6 foot long female Red Tail boa. The problem is I already have a 31inch Red Tail boa. The larger snake is very docile and laid back while the smaller one hasn't been tamed yet and is a little aggressive. The cage I currently have is 3'x3'x6'. I already know to feed them separately, but will they be fine housed together?