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

Try to find a "small" drill press with over a 6-8" stroke, and with the side load capacity/tolerances to do boring... ****, most little Chinese presses have a hard enough time drilling a hole. Plus that means you're going to have to manually feed it at a somewhat consistent speed (with a dinky 6" handle) to get any kind of useable bore finish. Not to mention trying to "bolt it on" to the deck anywhere near the bore center...
What next, torch out a slab of 1/2" steel to use as a torque plate?