Well the way with the 3/4" inch bolt retapped would need to be done by a machine shop the other way I've done before myslef but I'd have to see what it looks like. Good ol' Keith might be able to help you out here since something similar happened to his old GSR block.
If you can post up a picture.
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Don't bother giving me "rep", I won't return it and I think it is stupid.
Gracie Barra Clearwater
Gyms in Clearwater, St. Pete and Port Richey
pm me if you are interested in trying a free class at any of the gyms.