freeze plug / coolant leak question 72 dart 318

There are various mechanical plugs, IE they don't drive in, they "wrench" in. If you have the room you can use them, assuming you can get the old one out. "The thing is" some of the rest might be right behind.

I was ENRAGED, in the early 70's freshened up a 440 and put into my 426 64 Dodge. Gave the 440 heads to the shop told them to tear them down, check, hot tank, do whatever for a valve job and REPLACE THE FREEZE PLUGS

They came back all nice and PAINTED even. So I put em on and ran it about two weeks. YUP. Rear plug right against the firewall!!!