[The Deuce]

As far as I know, anything goes on my '72. Didn't have to get it smogged, car barerly runs, but can be tagged.

It is my understanding that anything south of the cats is not governed by the smog laws. There are "drive by" noise laws in CA, and you can in trouble for those. I know plenty of guys that run flows, and there is no problem changing the muffler.

As far as intake is concerned, there is the dreaded "visual inspection" This is where you get nailed for missing hoses, etc. They do not open the airbox to check what kind of filter is in there. So a K&N filter in itself is not going to get you into trouble.

More drastic mods, like heads, headers and CAI's are a gray area. They will pass the sniff test, but not always the visual. I hear there are ways to find people that won't bust you if you only fail the visual part, but I cannot be held to that statement, especially since my car is S-T-O-C-K.

If anyone has specific questions, please make it known you have them and attempt to get them answered via PM.