hey everyone, i'm a new member and haven't been on the site before so hope this question hasen't been asked too many times but why is the altezza a tuned 4 cylinder 16 valve instead of a tuned 6 cylinder 24 valve? also, what tuning potential is there for the 6 cylinder....what exactly makes the altezza faster- is it ported polished, bigger throttle body or something....hoping somebody can offere me some answers, cheers!