Cheers Herman!
I found these too, but couldn't work out if they were removed from another 400 or new. Nice jig though!
Mine are the same but the bottom links came separate and I have had to modify top link angle and holes.
Looks like the commo lower links measure 71cm chassis side and 107cm axle side, so sounds like about 1 degree difference as you said chap.
Cheers
Damo.