You think they are after the b16a lolol they want money for dope or ****. Even if they were after your car for parts im sure they would find out what its got by talking with you and they would get disscouraged only knowing that you only have a stock motor and a few other stuff. I wouldn't even look at your car to steal unless I was soo hard up for money to buy massive drugs. If you had a H22 and I was the type of greedy person that just has to have it but, can't afford it then yes I would try to steal your car. I'm neither and I don't steal cars for parts cause i don't really "Need" them. I'd say you have little kids or a bunch of doppers who need drug money. If you want to catch them then just go around town and get to know a few and join their crowd. Once you find out who may have been involved then get more info to see if they really are the crooks. If so then its up to you on what you want to do next.