i have been seriously thinking about ls6 heads, and i know they have 64cc combustion chambers which will lower my cr, but isn't that a good thing with forced induction, i will just get a smaller pulley in spin that procharger some more. am i right? can i go more boost with the lower cr? and will i lose hp or gain because of the superior flow but lower cr? and on a side note, i also wont have to worry about those broken header bolts if i get new heads.