I didn't find any DIY's, but I took it slow and paid attention to little details.
Start by removing the seat itself. Be sure to disconnect the battery prior to avoid detonating your airbags. Disconnect the airbag plug and play connectors. Remove entire seat.
Then, remove the plastic panels around the bottom of the seat. I believe mine were mostly, if not all, phillips head screws. Once removed, begin disconnecting the seat cover. It is a stretched hook style of connection.
Once it's fully release around the outside edge of the seat, begin disconnecting the snap rods in the pleats of the seat (butt pan).
Once the cover is fully removed, pull the old foam off.
Place the new foam on and be sure to align the metal support bars properly so the foam sits flush.
Begin the tedious task of reinstalling the snap bars. These are easier in the beginning as you work from the back section towards the leg section. It's a huge pain in the a$$ as you get closer to the front.
Once you get all the snap bars connected, restretch the cover over the foam and hook the connections back up all the way around the skirting.
Reattach plastics and reinstall seat.
Bam. All done.