I just did a project that took about two hours test drive included to replace my drivers side seat carrier, cushion, and hammock support. I had thought this would be a big job but not really. My reasoning for replacement was that I noticed some seat sag and the foam was starting to break away from the bolsters. The hammock support was still in tact but probably not long before it would fair. The carrier could have been reused but the wire bracket was broken so I figured what the heck.
Definitely notice improvement in support and seating position. I was sitting so flat that I was getting pain in my back and legs. I got my parts from Pelican but all in all it was not too expensive to repair the right way. If the leather was damaged I probably would not purchase one but gone aftermarket.