well im fixing to add a Z06 cam and i thought if i had to take some of the heads appart and inake off or whatever i have to do that i would swap in some that will perform better. What is the diffrence in the 6.0 and 4.8 and would i be better off porting? What im really wanting to know is other than a tune what will support my cam more/best? I was hoping to get in the 14 with tune intake cam headers and exhaust.