a body big block valve covers
well, yep they have the chrome ones:-D
look at this
http://www.tonysparts.com/images/BigBlockValveCovers.pdf
thats what i was going off of. and i honestly couldnt recall what they had off the top of my head. i knew that the page i looked at said that, and i knew around the time i remember them being around we had a 383 dart, so it made sense. theres been many other big blocks through the doors though.
would they make sense for a 66 coronet 383 car? that was initially what i thought these came off of, but when i looked at that page it said different. so i just went with what it said.