I finally had a chance to stop by my local Mazda dealer...After discussing upgrades for my own ride, I mentioned that I know someone interested in creating an awd ms3...The following info is based on using an awd axela for your conversion:
They definitely have an awd axela available in the current lineup and long story short...My friendly staff friend said that he
does think it's possible but it would no doubt take an enormous amount of time, effort and money to make it a reality...
That said, it seems it's conceivably possible to create an awd ms3 using parts from an awd axela.
After further discussion, you would definitely be better off tracking down a totaled awd axela and using it as a "parts car" then ordering new parts to make the conversion.
A new AWD Axela is 2,000,000 yen which is a little under $20,000
I will be visiting again soon...I could ask about using MS6 parts...