Yeah they come out fairly easily. Just alternate wiggling from each side and eventually they just pull straight out.
Tried to pm but your mailbox is full.
I'm really sorry for holding you up like this. I was just outside trying to get them out but they are not cooperating.
I'm just squishing them all out of shape. The heads came off an engine that had a seized bearing.
Heads looked like they'd been overheated more than once -- might be why they're not coming out.
I just googled the part number, 4648604, rockauto shows 3 available at 5.25 each.
There's a guy on ebay that has two and moparpartsgiant has them for 5.99 each.
Wish I could've done better!!
-- Terry