md321h turbo
650cc injectors or uprated fuel reg(injectors being the safer option)
gt spec headers/up pipe
full 3" bore turbo back exhaust
cold air induction
colder spark plugs(if you haven't already)
fmic(optional)
that will probably be the spec andy forrest will recommend.
i followed the same route when i had my "1",ran that spec with the standard tmic and was fine but the map is compromised by the safety margin needed with the tmic.changed to a front mount and had the map tweaked to suite and made quite a difference.
iirc andy was able to apply more boost in the lower-mid rev range which gave the car quite a bit more grunt and made it more aggresive to drive.
mine ran just over 400 on the tmic and just under 420 with the fmic.
andy done all my mapping,car drove great and the engine never once missed a beat.
hope this helps