OK, so this same thread didn't go over so well in the main OT forum, so I thought I'd try here instead. I'm heading to the junkyard tomorrow to try to locate a SBC 400, and it would be much easier to identify if I knew exactly what a 400 damper looks like. I know they are slightly indented on one side (compared to a 350), but since I haven't seen one. I may not be able to see the freeze plugs due to the exhaust headers, and serial numbers are likely to be covered in years of dirt & grease. So does anyone have a pic of what the damper looks like?