Warning: Pictures of Naked Phones Are Included!
Here are the pictures I promised to put up... sorry it was a bit more than 30 minutes or so... life got in the way.
My Verizon Galaxy Nexus:
View attachment 24220
My Verizon Galaxy Nexus Extended Battery Door:
View attachment 24221
The Sprint Galaxy Nexus:
View attachment 24222
Mostly for reference, the Sprint Galaxy Nexus standard door:
View attachment 24223
You'll see in the first image that I point out the reason why the modification is needed. That is because the indents for the battery door snap-in things (i don't know the technical term for them lol) on the Verizon GN is in a slightly different position on the Sprint GN. You will need to cut off the one problematic snap-in thing on the door to make it fit (which I point out in the 2nd picture). Other than that, all other snap-in things match positions for the two phones.
Also, the Sprint GN is black in color and the Verizon GN's darker grey / gun metal color. Just in case you were wondering... I didn't realize the colors were different until I had them sitting side by side.