BBC gen 6. This pan has never been run, it has sat on a spare block for who the hell knows what reason for over 5 years. I got it for a jet that has been gone 3 years. There is some minor surface rust on the inside bottom. There are 2 trap doors, a windage tray and a pick up. There is a bracket on the front that I can't remember what it's for. All in all, a very nice pan. $300 plus shipping....