If you have an old car or truck and ever thought, man this seat is a bit worn, I have one thing to say to you.. BUY NEW SEAT FOAM!!!
Holy guacamole this is literally the best thing ever. Feels like a new truck. This durofoam stuff is firmer than factory and feels more like my Land Rover did and not an old couch. $125 and 20 minutes of my life. New one on the left, obv.