What makes the 8 month old amazon not tamed? Was this bird hand raised or parent raised?
Any bird, at any age, can be tamed, although adult birds, large parrots, and even amazons may be more difficult to tame without the right training. The amazon is still pretty young though.
If the bird is parent raised, then it would be easier to work with a hand raised bird. If the bird was hand raised, well, that may depend on your experience, what you are willing to learn as well as your commitment. Amazons can make excellent companions for the right people! But they simply aren't for everyone!