You can do that from the playing with the patterns. I have already figured out many parts to the shoes just by making up some different versions. The idea of buying the shoes is to have the most accurate parts. Again, in a once size only option regardless if they are the real soles or my V2s. And do we even know what size these are?
So far, the has been a cloth similar to the V2 uppers, but nothing quite like the 2011 MAGs.
They're 12s as far as I know.
By the way, the flat patterns DON'T form perfect Mags. I've been doing some test while away from the board and they need to be formed over a last to get the curve of the toe. Since I didn't have lots of free time, I had to choose tiny projects like that to focus on.
...also, my original K-Mag Re-upper pattern actually used the proper seam points for the structure of the uppers. Here's the results of one of my tiny projects:
And once my work-work is done (In about 2 weeks) I'm going to be working on uppers again using a new technique that should eliminate the need for these patterns, and make a more durable shoe, even though it will add a little more effort up front.
-Nick