the back seat is a 60/40 split fold down...for my coupe the cushion fit right in but the backrest needs to be narrowed a couple inches...I dont know if that would be the same issue in a sedan. As far as the fronts are concerned its as close to plug-n-play as it gets...the bolt down hardware is exactly the same and the plugs for the powerseats are the same. My car doesnt have power passenger seat or heat so those items would have to be wired up if you chose to use them.
I had considered taking them to the upholstery shop and having the covers and cushins transferred to my seat frames so I could still use them, but the cost to do that was almost as much as just having new covers done (I think maybe he just wasnt keen on the idea) so I figure selling them to someone who could use them is a better option.