It can be done but you'll want to keep the plastic seat back receiver that's installed in your rear seat back or you'll have a hole there. The part can be purchased separately from a dealer.
There's also the issue about the fact that an irregularly shaped hole is cut out from the frontward floor panel so you can either swap panels from the buyers car if he's got the same color (would be easiest to install that way also) or try to see if that part (possibly more than one part) is also available from your dealer so that your car doesn't look "chopped" afterwords.
The rest shouldn't be too bad but it'll be difficult for the buyer to install w/o the instructions, not great either IMO but better than nothing.