Which cam will work decently with stock magnum tune?

The best modification you can do while in California, is to rent a Uhaul to move the **** out.

You are wasting your time and money trying to play by their rules. Its not about emissions- I got a 408 stroker to pass EUROIV emissions - its just a money grab for the state.
Hey Ryan, I've spoken to you years ago about your tuners on YouTube Good to see you on here.