I think my 225 is toast

If there isn't a knock when you pull the plug off, I'd bet you could replace that ONE rod bearing and you'd be able to drive the heck out of until you are ready to put another engine in it.

You can even take the pan off with the engine in the car still.
I'd have to try it just for pure grins to see how long it went afterwards.
Worst case you blow it up. (Bout there right now anyway)
And of course might as well do #2 while your in there anyway.(or do em all)

I thought about that & read the manual (which says, oddly, to jack the motor from the left front corner of the pan...and then unbolt & remove the pan! Nice trick!). I figure by the time I open it up & buy a set of rod bearings for $120 I'll find the crank journal lunched. Then, there'd be no point in putting it back together with a new pan gasket. I'd rather spend those three hours towards changing out the motor. I'm old, you see... :)

This car is probably going away. Either sold or junked, it's a substantial loss. My own fault for not hearing this on the test run with the seller. $1300 + 300 exhaust work & another $300 in various bits pieces & a battery. Never too old to do something stupid. Ain't no fool like an old fool.