The tS wing looks better in real life, though it will probably still be a bit too
ricer for some people. The interior is mostly unchanged apart from the usual red STI start button, STI shifter knob (which just has a red insert on the top of the shifter), and red seat bolsters and stitching. The doors were locked, so I couldn't take any useful pictures of the interior. In the third picture you can barely make out the pink STI springs.
The WRX STI RA on display was marked as a prototype, and I hope they do a lot more work to the car as it really didn't look that great with the red "lipstick" decoration around the front and rear being cheap stickers that looked like they were just slapped on. The carbon fiber wings on both the tS and the RA are definitely the most visually appealing parts of the cars, and felt really well-built. I didn't take the time to measure the wings and compare details, but the wings on both cars looked like they were exactly the same.