65 Cuda clutch need advice

I checked with them and they have been out of stock for 3 months and no known date for restocking. Any other thoughts. Can I go with the 10" they show from another supplier?
Nope. The flywheel is designed for a 9 1/2" clutch. Their clutches are 10" with a special scalloped pressure plate. They were designed for slant 6 pick ups and vans. You might be able to find one elsewhere.