Hy bob fortner, a truck cast iron bellhousing from a V8 from 55 - 67? is open on the bottom and will provide some clearance around the crossmember, or if you would like to position the rear of the engine, you could use the engine rear crossmember from a 54 - 55a in conjunction with the truck cast iron bellhousing, those two items when used together will position the rear of the engine. As to the flywheel, you can use any V8 flywheel except the ones for a small block 400 or big block 454, that is appropriate for the clutch you want to use, and will allow the starter, which bolts to the bellhousing to engage the flywheel, hope that helps.
