Identifying Direct Connection Valve Covers

According to what i found, DC program ran from 74 thru 87, then changed names. I would have said somewhere in the eighties, for original issue.
I agree with this. They did issue them repeatedly.... The 2002 parts catalog list them as #P5007448, chrome and baffled, but they use larger grommets (OD) and they are stamped "Mopar" , not DC. I'll look for the # in older catalogs, when I find where I left one lol. I'd bet yours are nice heavy units.