Nothing too amazing, but I love it.
It's pretty much how I bought it from Barwick10 - I'm not taking any credit for any of the work it's had done!
Rear muffler delete, boost gauge, decent head unit, 17" Chinese wheels, Bilsteins and Eibachs, an that's about it.
I bought it to be my toy, but its practical enough that it is also the preferred commuter car... Its 8.2 litres/100km beats the 10.2l/100km for either of the V70s... That said, it is an entertaining thing to drive.
It is also amazingly good on dirt - so much so that I'm really seriously thinking about building one as a gravel rally car. Probably a NA one though, just to make life simpler...
FWIW, this is the full size version of my sig pic:
Only real hassle I've had with it so far is the turbo oil drain leaking.