Converter to flex plate issues

Here is a quick diagram I made to kind of get the general idea of what the problem is...

The diameter of the flex plate is larger than the diameter of my torque converter which in turn is putting the bolt holes of the flex plate atleast a good half of an inch passed the bolt holes of my converter.

My converter is a TCI-141338 which is a TCI sizzler stall converter for a 904 torque flight.

the flex plate I BELIEVE is the original one to the engine which is a 1967 318 from a dodge coronet.

when I get the chance to remove the transmission I will measure the holes on the converter to check the measurements on it.

I was just seeing if maybe someone else already knew what flexplate I needed ahead of time? or what else they may think about the situation?

converter.jpg