[blykins]

Well, I certainly wouldn't sell it.

In times past, I have dealt with this in a couple of ways....

1. Find a cup plug (like a freeze plug) that fits the hole, put a little silicone around it and drive it in.

2. Tap the hole for a pipe plug (requires engine to be torn down to bare block).

In either case, whatever plug you make needs to be under the deck surface of the block when installed.