Turn a small drill press into a Bore/ Hone. Bolt it to the top of your engine block & do your own machining .

OK, I have the tool, best one available I think. The LISLE 15000 Cylinder hone. It's the rigid type and good reviews, can remove taper and .003-.010" in no time. I was hoping for something with a micrometer build in , but I haven't seen that one yet.
Now let's hook it up to our 8" / 205mm 3980w Diamond Core drill rig and figure a way to anchor it directly over the boer.