Hi Jordan
Top one is Pat 11 or twelve, the bottom one is Pat 13
Here is a link to detail photos for Pattern 12 and Pattern 13 showing original and fabricated linkages. As explained on the page when I wanted change engines I was faced with either modifying the original or making totally new units to fit around different water pumps and pullies. Decided to make new because it left the original unmodified.
http://www.canadianmilitarypattern.c...age%20Page.htm
The top one you are showing looks like it may have been modified.
Cheers Phil