340 Flywheel

I have a 69 340 Id like to put in front of my 86 Dodge W-100 Truck that has the manual N.P 435 trans. I dont have a flywheel yet and dont know what I should be specifically looking for or what I can get/ modify to work.

Id prefer an 11 inch cause I have a brand new clutch sitting on the shelf.

Any chance one of my 11 inch slant six flywheels could be made to work?

What do I need to get/do to make this possible? Thanks