Quote:

the damage is in the combustion chamber- not the deck surface.



The damage is on the deck part of the combustion chamber too, as shown in the pic. Those could be cleaned up some by decking .020 or so. If the heads have Never been shaved you could even go .050 like almost everybody did when those Eddys first came out.

As already stated when a piston blows and gets broken to pieces, guess what, that cylinder now becomes part of the intake track and bits and pieces get sucked into the rest of the engine. The piston is no longer there to create the low pressure to draw on the intake track, so the flow gets reversed when that intake valve opens.

What should you do? You could do nothing and be fine. At minimum, I would clean up any rough edges witch someone else seems to have already done. You can also find your biggest deepest divot and see if it warrents a weld up.