How much you want for the motor. My motor in the current boat is good just the block where the freeze plugs are seems to be eaten away quite a bit.
I was kidding Jason!

I have to leave that 455 alone for two reasons. 1) I can't leave Glasscutter all alone out there as the only idiot on here with a running one, and 2) I watched Nordie pull his Mohawk out swapping out the 460 for a BBC in his boat.........

But PM Glasscutter or Tom at JBP. I also seem to remember Marcsrollin mighta had something laying around, and I'm quite sure Jim Brocks prolly got a few of 'em!

Are the expansion plugs leaking?

That would surprise me. Never seen a block rotting out around the freeze plugs.
Ray