Well, I ended up buying this interior. Regardless of grammar and spelling errors, the seller was prompt and overall it was a very good eBay transaction. I have a few parts left over (seat belts, my old seats that are in pretty good condition, the old plastic interior that might be of use to someone, dome light assembly, old carpets, previous head liner, extra ELT, etc.).
I started installation today but only got about 1/2 done. I can already tell that within the next couple of weeks my plane's interior will look like a modern sports car rather than having the early 70's look it had before.
My only problem now is that I really need to work on the outside of the plane and get that aluminum polished to a mirror finish. It used to be the plane looked better on the outside, but with the new interior I'm going to need to do a better job on keeping the outside shiny.