my son-in-law found these wrapped in very thick plastic in the garage in a cabinet. a neighbors son took them to an engine shop in Rossford Ohio to check them and the shop said they were opened to a 528 (I think) they either came off a 440 dragster or 440 roadrunner. most likely the dragster. I am unsure of their worth but I will be calling around and checking. my husband passed away several years ago. The shop in Rossford xrayed them or did whatever to check them and they are fine no cracks, heavy duty springs. I can see him measuring them and wiping them down, anyway he took great care and pride in his things. I need the money but I will not sell for a low low price. I would like a fair price for a great product. I put a couple items on mopar forums before they get put on ebay. My husband loved mopars and I wanted a mopar guy or girl get first dibs. call or text 419-704-5530. keep trying my phone has issues! thank you