re sealing the freeze plugs..... i always mix a little epoxy and smear it round the hole and the rim of the plug, then install as normal. if i happen to be using steel plugs i smear it over the whole 'inside' face too. epoxy won't rust through, lol.
neil.
She's using brass, which won't rust, but a lot of early Hemi guys use JB Weld to seal the plugs on those blocks. They actually have convex welch plugs that install and must be flattened a little with a hammer to wedge them in.