Run Stand Bellhousing

Can I just run with the 360 flywheel on a runstand? How bad with the vibrations be for a break-in. I imagine it wouldn't be too bad if i just wanted to idle and look for leaks but I'll need to do the break-in right away obviously.

EDIT: Expanded my search to include the bigblocks since apparently all the 6 bolt applications are the same and think I found what I needed:

JEGS Performance Products 601400: Flywheel for 1967-1993 Chrysler 318-440 with 6-Bolt Crank | JEGS