Briggs 19hp engine holed by conrod can it be repaired ?

I have a Briggs ohv single cylinder 19hp engine that has a inch square hole in the crankcase which was holed by the conrod when it let go. The engine can be repaired by grinding the crank and shelling etc and its quite a newish thing so its worth the exspense but does anyone have any tips for repairing the hole in the crank case. The crankcase is the type that is part of the cylinder so it would be far too exspensive to replace. Any advice greatly appreciated.