Bore and Stroke

My X block is currently at 4.100 and the machine shop said it will go to 4.125 safetly. The outside main bolts on that engine look very small mine has big bolts like the primary bolts. If it is cheap enuff I would sleeve all 8 holes if necessary. I would make certain that it is otherwise usable before spending that much on it. Hate to see a X passed if it can be saved.