chances are then he'd politely ask you see your CARB sticker for that turbo kit and all your other aftermarket parts he can find at that time.
your best off finding a way to aviod opening that hood at all.
it happened to my buddy who has a turbo civic. got stopped by the CHP on his way home from san diego one night. for something small ( think it was not having his license plate in the front) and then the cop just asked him politely to pop his hood, and just went thru everything with a fine tooth comb. he had a carb legal turbo and stuff, but the CHP officer was not buying any of that. filed some paper work and so my friend had to go to some SMOG referee and get everything more or less "factory". the chp officer even wrote down that the vent tubes (colored, yes he is a ricer

) were not legal to have.
so i think the best offense in this situation is a good defence
-scott