36mm & 46mm
I think as long as they are deep sockets, you should be fine. But now I'm trying to remember if you need 6 or 12 point.
edit:
http://www.valkyrieforum.com/bbs/index.php/topic,17228.0.htmlmy post,
1 13/16" = 1.8125" = 46.03 mm
The threads write about 32, 36 & 46 mm, along with the 1 13/16" sockets being used.
I don't think you can us the 36 mm in place of the 46 or 1 13/16" sockets.
If the nuts threads are 20 & 40 mm, then 32 mm socket for the 20 makes sense.
The 36 mm doesn't fit anything, and then you would only need the 46 or 1 13/16" sockets for the 40 also makes sense.
So we need a 32 shallow & a 46 deep socket, 12 points.
I might have found them online yesterday. ntxtools.com , they have the size but not the deep 12 point, so I was waiting till today to research some more, and then call them up. I think from $10 - $20.