Using an automatic housing with a manual flywheel? Can it be done?

I am in the process of building a run stand for a 73 Dart with Automatic transmission.318 engine.
I don’t want to attach my automatic transmission to it yet.
I do have an old gutted out automatic 904 transmission casing that fits.
Does anyone know of a flywheel that will match up to the starter and this case?
In this way I can just find an old flywheel to use to start the engine.

Thanks.