what i want to know is some info on these...like why are they better, if they are, whats the hp and turque rating and if the gains are canceled out by its weight, i mean is it heavier than the zetec. also, does anyone have a clue about its tunerability...for example, will ppl see bigger increase in hp and turque with the same mods as on zetec?? and last but not least, if it is better, how hard would it be to swap one into a zetec focus? thank you, thank you, thank you!!!