[jhv48]

Just tell them what it really is. These guys know their motors and will check the casting numbers.

It doesn't matter anyways, the SB100 is to smog exempt your car for life, so calling it something other than it is will accomplish nothing but telling the examiner that you don't know crap about engines or are trying to pull something over on him.

One other thing, assuming you have a carbed engine, make sure you have a closed breather cap system. You will be failed if you have a breather cap on your valve covers that vents anywhere other than the air cleaner. If yours vents to the air, buy one with a vent hose and attach the hose to your air cleaner assembly. It's a real pain to fail on this item and then have to make a return appointment.