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

All you had too say was, start the bore at the bottom of the cylinder useing medium pressure on the stones, cut through glazed surface and begin enlarging that portion then make occasional passes up and down the entire length of the hole til you size the cylinder. A good method of sizing the cylinders is to use the course stones til the new pistons just slip in tight; then change stones and HONE for Proper clearance and finish.