64 273 Torque Converter issues

Man that does suck cause the 318 crank will bolt in but you have the torque converter register issue since it's a 69 and the 273 is a 64 plus it'll need balanced because the piston weight is considerably different between a 273 and a 318. I think I remember seeing someone advertising a 273 crank recently in the for sale section. didn't pay attention to what year it was but if the crank is all you need to get the 273 going it'd be less work and cheaper to find a crank for it. Just make sure the crank is a 67 or older.