Just lucked into some BBK cats. Marked BBK, CA/CE 91800, 02/02. 2.5" ID, heat shields are 9" long. Lady I got them from had no info, just wanted them gone. I checked BBK's website and did Google searches, no luck. I left a message for BBK's tech line, but maybe somebody here has some info. My guess is they were cut off a 2002-era catted H or X pipe by the owner's ex. Anybody here have any clues?