Just one word of caution. Bolting a 5 port turbo on your car isn't the ticket for a hot ride on your track the Sunday.
Rule of thumb: As much powerful is a engine, the more that needs about tunning your car and engine. To exploit full potential of your engine needs a steady hand doing carb setup and a exhaust capable of pulling 100% of your engine (not to say about your hands....). Hint: Drill your exhaust stinger up to 5mm or 5.1mm if you find the drill to get more from your pipe (attention to the sound pressure limit: 82 dB maximum).
Maybe sometimes you can be faster with a lesser powerful engine who is more easy to tune. 1700-315R is a blast. Got one and yesterday exhausted my stock of belts for my MTX3
But friends got some 'spanking session'
specially at the backstraight. Those 5 ports are very poweful and plenty of zoom zoom...