My friend and I are working on his old block. One of the sleeves is cracked because he boosted too much. But I digress. There is a hole in the block that is roughly the size of a quarter. I was wondering if there was anyway i could get that hole welded up and then resleeve the block. I believe that it is a b18a but I am not 100% on that. No matter. I was just wondering if this is possible. Thank you.