Front seat finished! The front seat backs were quite difficult I think especially because I have the all foam-no springs version of split bench seat. Before we did the last seat back, I found the following video that helped quite a bit...
https://www.youtube.com/watch?v=FljmCEg6WVc
I replaced the seat adjuster wire underneath that was stretched out with an extra piece of listing wire.
I'm pretty happy with it. It's not perfect but good enough. One problem that I haven't figured out is that the passenger seat back lock doesn't work... It may be broken. I can't get it to lock even if I push it manually as far as it can go.
The headrests are in good shape. I am going to clean them and spray with SEM satin black and re-use.
Next is headliner clean and re-dye. After that rubber sound deadener on floor and make a barrier between back seat and trunk.