I found a really good deal on the QSD 216's locally and im gonna check em out in person tmrw. He claims they are brand new never installed but has been powered up in his garage with no more than 10 watts, which i think is technically used of course. Anyways, what are things I should look for in the speaker system to make sure they are in fact the Q series speakers? Are they stamped with "QSD 216" anywhere on the crossovers, tweeters, or woofer? And what are all the items I should look for that is included with the set, ie grills, etc...