So what exactly is wrong with the Stillen SC kit?

Originally Posted by MMC Racing

Every plan to get around CARB has risks. If you are going to do the out of area registration, make sure your driver's license matches. It is a red flag if it doesn't. If you get popped near your house, the chances increase that you'll get popped again by the same cop and he'll then know whatever story you told about just visiting is BS.

GTM will never have a CARB certified kit, so OP go ahead and buy the Stillen kit and get a good tune for it. Yes it wouldn't be CARB approved anymore, but no one will know.