depends on which "264" cams you are looking for... all "264" cams are not created equally.
Idle is a bit high, but other than that they are decent street cams. Passing Cal smog crap may be really hard though
HKS cams don't last long. They wear to fast. Plus their specs don't always jive with what you actually get. I would stick with some heat treated TRD(too much cash really) or TED cams
people have passed smog with the 264's out here in cali, just gotta make sure everything is up to spec....gotta raise the idle to the maximum allowed IIRC 1200rpm so the wont notice the lumpy idle
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