I don't think a transplant would possible for a refresh x with the horizontal screen. I would imagine the active spoiler setting would not be able to even be turned on in the mcu for the version. you could technically install the hinges motors etc but you would have to control it manually to rase and lower it with some kind of toggle switch for the 12v.
... and I could settle for this. I LOVE the idea of it magically adjusting to the speed, but manual with a switch works just fine too.
So sounds like nothing is there except the wing, which is what I would expect if it hasn't been an "active" spoiler for several years.
Why aren't some of these Tesla 3rd party sellers all over this? Evannex, Tesery, UPP should be all over this with something bare bones.