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)