|Click for (very) high resolution version.|
The difficult part would be removing the 90 µm of plastic from the bottom to bring the thickness down from 0.76 to 0.67 mm. As you can see that isn't a lot of plastic and it could likely be done by sanding/filing down the back. Perhaps the best way to do would be to file it down a bit and try and insert it. Then file some more if it doesn't fit and so on.
|Looking down on the same SIM as pictured above|