[panteralee]

I have never heard of any SB100 car owner getting to "choose" what year their car is called by the DMV. SB100 dates the car as to when it was registered by them. Furthermore, ALL SB100 cars are smog exempt - that was the whole point of SB100. Not sure what aluminum head would have to do with changing the way SB100 works. There are numerous cobras and GTs running around Cali with Aluminum heads and AL blocks for that matter and they all are SB100 cause that is the only way to register them. And how on earth would the DMV every know if you changed them anyhow once you are registered? So no, I do not think there is any issue.