Bell-housing alignment help

have you tried mounting the base to the back of the block and checking runout on the crank flange, both for flange(flywheel mounting)surface flatness, and for edge runout?
I am having similar thoughts; the crank flange may be off, or the bellhousing or back of the block could be cocked upward relative to the crank.

Muscle Motors says that Mopar wouldn't ship a block that bad so it must be the bell.
What a stupid non-answer.....Does Muscle Motors have production records from the original machine shops supplying the factory to back that up?