I'm just looking at using the 2.0 version, you can go upto just over 2.3L according to Qld Transport guidelines for the weight of these cars with boosted motors but i think they will look more favourably if you don't push everything to the limit
Will have to do some more searching, i know some people bought some Xmembers from UK and fit had lot to be desired, just not sure who made them
Have also considered just putting a N/A Duratec in running quad throttle bodies etc but i like the sound of having a boosted Esky