67' 318 crank in a 69' 340

WTH.... golly that IS special. I wonder if they were trying to do some sort of external balance equivalent to what one would have with the standard external balance TC for the later 340. If they were, they put it about 30-40 degrees out of place.

I would see if that can be filled. Since the rest of the flange looks intact, it might be just fine.