Hey guys, just thought I'd let you know there is a mobb in the USA doing a couple of direct replacement turbos to suit the MPS.
ATP in the states is using GCG Trubos in Sydney as their Aus. supplier. Price is $2560 delivered. You can reuse all your factory manifolds and dump pipes too.
I'm getting one of these babies.
GT3071R Bolt On Turbo Kit for Mazdaspeed 3: atpturbo.com