Not in this post!
Luckily, this is not a driver because living with it is a pain. You have to swing the tire out every time you want to get into the rear. I just find it annoying.
On my other 80, I have the spare mounted inside. It is more of my wheeler and interior space is not as important. However, it does take up a lot of space for something that rarely, if ever, gets used.
If you aren't wheeling the rig (gravel roads don't count) or have large tires, underneath is the superior spot for the spare.