Crank pilot concentricity

How about pulling the bushing and just use the pilot hole?
That's a thought as well. might have to try the stuff it with white bread trick I saw on TV to remove the bushing.

I tried to post more earlier, the site was acting up. Can you temp. chuck it up at the flange end, use the center at the snout end and double check it that way? I'm thinking, chuck into the converter bore, or outside on the flywheel register? Then check main bearing runout.
Problem I would have is properly supporting the snout end if I'm not on a bearing surface or balancer mount. I don't have much hope that the bolt hole on the front is very concentric and it isn't a good surface for a center point. I should be able to check the interior and exterior of the flywheel flange/converter bore at the same time as the bearing surface to see if they are in sync in the setup I have. More I think about it, .005 runout on the end of the trans input shaft is about .001 or less on the gear on the end of the input shaft considering the fulcrum point of the bearing. I'd rather have 0.000 but I got to think they've been run successfully with more from the factory.

I've got some more measuring to do and then I'll decide which way to go. I was hoping to just re-ring and put in new bearings with the original pistons and lightly worn stock bores that I had honed. I'll stick with that plan if the journals polish up and the throws measure out correctly cylinder to cylinder. The piston heights above deck before tear down have me concerned that the crank may be a bit wonky.