Hi Guys, I'm in the early planning stages of an engine & drivetrain build on my '04 1500. I know some of you on here have some pretty fast & powerful Avys. Unfortunately (at least from a performance and tax standpoint) I live in California. So that ties my hands pretty significantly for mods I can do on a streetable, smoggable truck. My question for you guys with high-performance engines is if you're running cats, or no cats? I just want to know if cats are a total death sentence for performance, of if you can make it clean and mean. I know there are several CARB-legal blowers, which might be my best bet. Thanks in advance.