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
