Flywheel for Slant Six and 833 4 Speed??

Hello all. This is actually for my 1984 Dodge D100. Replacing the 10" clutch and pressure plate and thought about replacing the flywheel also. It looks to be ok, no cracks, hot spots, or grooves, just thought while I was in there, just replace it and keep the original as a spare - maybe resurface it at some later point? Anyway, calling around the auto parts stores, and looking online, I can't find one anywhere!? I figured it would be the same as a car flywheel with the 225 and 4 speed combo so I thought someone on FABO could point me in the right direction? Sorry for posting a truck question - just running out of options and help. Thank you in advance for any input.

You won't find one. You have one. Use it.