Usually with the classic prodrive the TMIC hose was blue with white lettering on it. And the ECU should have a Prodrive code or something on it. the backbox is always another indication along with alloys, you should have a certificate too. That's key for genuine, worth a lot of money though sold with the center console badge. But like anything with these cars doesn't mean a lot as it's so easy to swap and change things. Subaru Uk should also have recorded information on what was factory Prodrive. I have to admit the badge looks strange to me but might have been a replacement. Difficult to say though.