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

PS, the Chevy long block was "remanufactured" out of Mexico...also I noted the the front cam bearing was missaligned, oil had a hard time getting to the front main...slight gawl on that bearing but it didn't mess up the crank bearing surface....cam bearing is still good , but will need a drill put thru it to enlarge that oil hole....get things aligned.