Wishful thinking here...but do you think they used the Type R transmission and clutch? I know it has quite a few Type R suspension pieces and the similar attributes with the transmission as well.
My opinion is yes, but still a 1.5. I would say no more than 220 hp and 200 tq. Turbo, Tune, or cams to get it there? I only say this, because of the GTI now being more than 220 hp.