i am going to add a ATI with twin intercooler to my 2000 ss m6. i am thinking of 5-6# and calc'ed the CR at 14.22/1 at 6#. with conservative tuning is that CR safe or too high. if to high what is the best way to lower it to say 8.5/1? heads milled? different pistons? thought i would ask the experts. thanks.

randy