Hi Aaron,
Although the process is somewhat difficult, it is entirely possible to replace all of the glass without replacing the entire enclosure. Be aware that you need a LOT of patience, as it is a painstaking process to separate the glass from the back, and especially the charging coil which is glued to the rear glass.
I ran across a couple of videos that show a successful replacement, but be aware that they do caution that you are risking damaging the charging coil and if that happens you won't have any wireless charging. If that's a risk you're willing to take, here are the videos for the top and bottom glass that will show you how to get through it.
[link|https://www.youtube.com/watch?v=8AuvfHDw7_k|Google Pixel 8 Pro Top Back Glass Replacement Repair - YouTube]
[link|https://www.youtube.com/watch?v=K6MFHuZ4T-g|Google Pixel 8 Pro Back Glass Replacement Repair - YouTube]
Good luck, and let us know how it goes!