The smog technician is correct. AIRAID model #252-218 has not been approved by the California Air resource Board for use in California. This cold air intake system does not have an EO number issued to it and will cause a visual (tamper) smog check failure.
Your option is to replace the air intake system with an OEM part. We were unable to locate any aftermarket cold air intake system, approved by CARB, for any 2007 model Chevy Corvette in either engine size configuration, 6.0 or 7.0 liter.
Your Corvette's prior smog check passed more then likely due to the cold air intake being overlooked by the previous smog technician. Since the implementation of the STAR smog check program smog technicians are much more cautious when inspecting for smog failures, as they can lose their STAR status; dramatically reducing the number of vehicles they can inspect.