Hey I am thinking about doing a cam swap on my basically stock 8.1l and I would like to get some suggestions on which cam to run I have efi live so tuning for a cam is not a problem and I would like to upgrade valve springs and rockers and would like to get some input on what I can and can't do for cam lift and also what cams are better I would like to do the comp xr270 but would like to get some input on that cam cause I would like to get better upper rpm power and I would like to get input on the raylar cams and info is much appreciated.