Interesting. I just talked with my mechanic who's putting a T3/T04 into a rear drive 240SX. Took the SR20DET out of a JDM Silvia front clip. He says the 2.0L engine is good for 450hp with this turbo setup and Wiseco pistons. The stock con rods are good for 500hp, but that's Nissan for you. He's using a 300zx transmission and the beefed up LSD/Diff from the JDM Silvia.
So, if you pull 350+ hp out of this, what are you going to do for the transmission? I'm not aware of any front drive trannies that can carry that sort of hp from Mazda. Now if it were rear drive, you could probably take an RX-7 tranny and rear diff.
Anyway, looks great. Have fun tuning that puppy.