I was perusing the other forums and found this:
https://www.thenewx.org/forum/15-how-to ... m-pbr.html
And thought I'd pass along that it works for leather Pathfinders too!
Discovered the corresponding foam for me 2005 with leather and seat heaters costs about $70, versus $1k for a whole new seat. Followed the instructions and while it's a little different, it's not that much different. Maybe three hours of work.
No more saggy seat, feels like new