Have a pair of factory old Chrysler valve covers they were made by edelbrock in the early 60s for the 413 wedge motors I was told they are sand cast aluminum and were taken off a 440 engine back in the 80s anyone interest please contact me by mastertech2124@gmail.com there are no cracks and appear in good used shape was told these are very rare and have seen some listed for $1100.00 these can be had much cheaper than that make me a reasonable offer thx