s-t-r-e-e-t-u-n-i-t, protege garage, and atp turbo are all places you can call and ask about prices for geting a gt3071 or a gt3076 turbo - really anyone who is an authorized garrett dealer can get you the turbo - some things you need to make sure of are that it's got a 4 bolt mazdaspeed 3 flange, you would also have to buy a new 4" inlet pipe from someone like pg, cpe, or atp, and it would be good if you upgraded the manifold while you were in there - all of that's gonna run you prob in the neighborhood of $3000 - it would probably be a good idea to ask for a lower then 14psi wastegate spring because either of those turbos are capable of making enough boost to blast the stock internals - and you are gonna need a custom tune with atr because none of the off the shelf maps they have for the ap will work -