I'm getting bored out of my mind at work, so you're all going to be subjected to my micro-updates.
I managed to get an okay-ish front cross section image of the new and old side view mirrors. They're here:
Keep in mind these two shots are not scaled the same.
I'll probably be re-shooting the low profile mirror, since it has a lot of non-cross sectional area in the shot, specifically with the mounting bracket. Isolating it isn't hard to do with Gimp or whatever photo manipulation software you have.
I'll be using software called MIPAR that's gave me a free license until July 8 (because student) to analyze the photo and give me an approximation of he mirrors' surface area.
Their website is here:
https://www.mipar.us/
There's plenty of guides on how to use MIPAR and I read one that mentioned you'll need a scale to tell the software what area a pixel is worth. I didn't know this when taking the shots and cursed myself at first. Then I realized an 8.5"x11" sheet of printer paper features prominently in both. xD So, no worries there.