What crank is this?

Bobzilla said

Any chance you can post more pictures? Does it have a normal torque converter and flex plate style register on the rear?

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8 bolt flange and stock 6 hole flexplate for clarification, also drilled for pilot bushing. No mods as stated before and dirty rusty appearance on journals is a waxy, sticky protective coating.
As I said before thank you guys for the clarification info.
Research shows 340 + .040 overbore nets a 373.