318 Flywheel?

Hi guys I have a question. I have a 318 Flywheel from a 1984 Dodge truck I'm using in my 400BB. I'll be running a Ram 3 finger 3200# pressure plate with a sintered bronze clutch disk. My question is can I use my 318 flywheel or do I absolutely have to buy and aftermarket one?

.........u need 1 balance for the 400.......also is the 400 crank drilled for a manual trans..........kim...