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We asked Pete the obvious question, Could we take a set of LS6 heads and put them on an LS1? He said they would bolt on, but when you look at them as a piece of the entire package, they arent necessarily the best choice. To use these heads on an LS1, you would also need to purchase an LS6 intake (to match the intake ports) and throttle body, which could easily run $1,800 plus the cost of the LS6 heads and any machine work to be done. You could get more punch for less money by modifying the original LS1 heads. The cost goes up if you have a 97 or a 98, because their valve covers use perimeter bolts instead of center bolts, and the coil mounts are different. But, if youre a proud Z06 owner, you have everything you need.