Ledwardio

An Alpine unit was the MY2017 Sat Nav upgrade option, and I think I'm the only person who got one!  
Now trying to find the model number is an impossible task, as you've found Alpine don't even refer to it on their site. I think its based on the INE-W997D but with buttons on the side like their Freestyle X702D-F set-up. Sorry, I know that's vague.
It works well but I find DAB reception through the sharkfin a bit patchy so I'm looking at replacing that with a small whip. Of course trying to find out what connections are up by the aerial without dropping the headlining is proving impossible.
I'm also considering the Focals at some point.
 

I'm not sure if this is well known but I got fed up with the keyless fob only opening the driver's door.  I researched it and found out how to make door entry unlock both doors.
Sit inside the car, engine off.  Press and hold both the unlock and Subaru logo buttons on the fob for at least 10 seconds.  You will get a single beep.  Driver's door entry will now unlock the passenger door, too.

Bob, give me a shout and we'll sort something out to get it back on the car for you.
 
Glad to hear you're keeping it after all that back and to  
 
Mike