Bellhousing

You'll want an A body trans, not a B or E body as those are longer out the tail and have different shifter mount locations. That Lakewood housing looks set for an 11" 143 tooth flywheel. It can be set for a 10-1/2" 130 tooth as well.
Some helpful info here...……..
Mopar Big-Block A-Body 4-Speed Conversion

Although it's probably already sold, here's an A body trans with a SB bell...……
[FOR SALE] - 4-spd. transmission, bell housing and related parts