I now it's probably listed somewhere here on the great www which exponentially grows like a virus thanks to repeatetive question like this.

Whatever. I found two pretty decent interior on some guys car graveyard. One is blue from s4 and the other one is black from s5. Now I drive an 87 TII and I want to switch to that black s5 interior (EVERYTHING). Other than those automatic seatbelts everything looks same, but I wanted to make sure if plugs on electronic pieces ( ac/ heat control and turn signal, lights wiper etc) would fit. Also what's the story with dashboard? I would be really pleased if mazda engineers left it alone, exactly the same like s4 dash. In other words please feel free to list in random order things that would not fit, or there would be some kind of issue with.

 

I think there's some modification for the dash to bolt in. Do a search on this website for "dash S5" or "S4 Dash S5"

For the door panels, you might need to speaker locations and associated wiring harness. Other than that, the interior should bolt up.

 

some have power seat belt not sure if that matters