I'd actually be interested to see if the V8 TB would pass smog with the stock air box on, the computer will adjust for changes and with the CAI off I would think it wouldn't gulp quite as much air. If there more or less physically the same it may just pass, bigger injectors and a tune would be pushing it. I recentlly got my 2004 and added a CAI and Catch Can I'll be adding the teflone coated Valve covers (Leaking already)and an upgrade on plugs and wires soon. The TB would be a nice upgrade and it's a bolt on application that seems rather quick to replace. Let's just hope the stock is there.