Turn a small drill press into a Bore/ Hone. Bolt it to the top of your engine block & do your own machining .
Working on the chuck to core head shaft, it will be at least a week for me to get the Sloppy CoreDredd Shaft Technology perfected. Here's a picture too show you what I am upaainst. I will need a 1" steely ball and a coil spring under it with the .25" horizontal shaft installed. And then a vertical shaft to this HSS 1" × 1" bit I modify/or professional fabricator. l am thinking a 1/4" universal joint socket incorporated somewhere