I had to replace my 2G's cat con today. It split open for some reason. BTW, the check engine light hadn't been on or flashing on & off immediately before that happened. My question: I found a few places online that'll give me a value for it, and some other places where I live (Connecticut). But getting a value depends on finding a serial number on the cat. I can't find it. Does anyone here know where that number is?