64 valiant 4 speed conversion questions.

A neutral balanced flywheel will work on a 318, as they were all neutral balance motors. How many teeth on the flywheel? Truck flywheels were bigger, and had like 143 teeth. I think car flywheels have 132. Have you looked into using a hydraulic throwout bearing instead of having to gather up all of the clutch linkage? The cost might be a wash, and it would be less stuff in the way of headers if you ever get some.