Just purchased a '69 R code. While crawling around underneath it I was surprised to find what appears to be the original exhaust system (or one that looks like the original to a big-block newbie). The pipes have resonators in them and the muffler looks like it has C9ZZCR on the back middle, under it is 6266 and then H1J. The very bottom of the muffler has the word "Inlet" stamped into the housing. Curious if anyone can provide some insight. Thanks in advance!