Here's a shot of my pal's 261. He used the bell crank that was on a car 235. The crank from a 216 puts the rod in the wrong position, about 3" aft.
http://www.myoldtruck.com/gallery/files/2/3/8/Engineleft.jpg
You'll have to look hard to see the linkage. If you need more, I can take some later in the week.


Fred
52 3600
69 C-10