Hi Alex
I've upload some high resolution pictures of the Pattern 12 wood spacers from my 1941 Pattern 12 C60L to
http://canadianmilitarypattern.com/M...0Up%20Link.htm please note these are fairly large photo files so they may take a time to open.
If this is missing a detail you need please let me know.
Here also is the drawing for the wood blocks from under the seats. The passenger side uses 1 1" thick spacer the under each seat rail and drivers side uses 2 2" under each rail.
Cheers Phil