Hello all this is my first post and my first SL600. I have seen and heard comments about wiring harness, transmission & climate control. Are there any other things I should look out for. It is a 1996 black car with black & grey interior and black tops and only has 42K miles on it. I just want to make sure I don't let something go that should have been checked. Right now I am waiting for a replacement climate control head to come which the previous owner had already purchased. I just don't know much about the V12's. Also what determines whether or not it has the Sport Package? Where to find a nice replacement stereo?

Thanks, Bob