Well I just got my 02 z28 a few months back and its time for some upgrades so looking to swap the heads and cams. I have seen a package from SLP that looks promising, but unfortunately I don't know of too many other companies that offer the aftermarket heads and cams, but Im sure there are some out there that are superior to the SLP, anyone have any ideas on some good ones, or feel slp is the best aftermarket for the conversion?