well, they use oversize piston + uprated the stroke a bit... maybe in the region of 7xxcc... but still, that much power from such a small block... i think the turbo start spool north of 4k rpm if i'm not mistaken...Heh.. 200hp+ on 660cc? I hate to think of the time it takes to spool the turbo to full boost.
...but then, BMW M12 (1.5liter turbo) can go up to 900bhp huhuhu
p/s: the 200++hp was the max hp got... later detune to some 180hp... to be safe hhehehe

Half of my speedo now is in the dark.. Any one knows where to get the replacement bulb or the...