flywhell change / balancing

I have a 327 short block built for the future (68 cam)??? I had it all balanced with the harmonic balancer and (automatic) flywheel. If I changed my mind and wanted to put it in my 55 car that has a four speed what do I need to do to be sure the flywheel works. When they balanced everything the first time they wanted everything, do I just send the speck sheet with the std flywheel???

Thanks

You'll be switching from flexplate to flywheel. Just have it Neutral balanced. They don't need the whole assembly to match the set up. Just the flywheel, and if you want it closer to perfect, bring the pressure plate and clutch disc. A bit nitpicky, but at least the pressure plate along with the flywheel will bring it dead on for balance.