1964-66 4 speed bellhousing question

The only aftermarket/new 122T flywheel I’ve seen is made by Wilcap. They do not mention crank register size, so may allow as a specification when you order. I don’t personally have the knowledge/skill to know if you can safely and consistently mate small register transmission to large register motor.

This page shows that the 122T ring gear will need to be supplied by customer: Wilcap Company Flywheels

This page shows prices for steel and aluminum:http://www.wilcap.com/FW.PD

I stumbled across Wilcap on the search for a 10” clutch that might stand up to a greater than 235hp motor. There are some folks on slantsix.org that at one time were able to get custom flywheels (I think from McLeod) to bolt on a more available Ford clutch and PP.

My latest “decision” for the collection of parts was to buy a flywheel, and have a local clutch shop beef up a 10” clutch for my 273 or a 318. Problem is that I have to make a decision on the motor, and I think I may have a later a833 in my 65 Dart. All this to say: the above info is based on research, not experience.