It's 164 mm vs 155 mm on RS and WRX and 144 mm on STI. If you need to lower it the STI bones would fit though it's probably simpler to start with a regular Impreza RS (2.5i now?) than bastardize an OBS.
Aside from the suspension there are other small niceties: cargo area outlet. The limited package includes a 6.1 speaker system and a 6 cd changer. Probably not as good as aftermarket but not bad enough for me not to mess with the audio. Maybe I'll eventually rip the doors apart for a Second Skin/rammMAT treatment but probably not anytime soon. Nothing aside from the cruise control lever rattles. SPL is low, but since I don't crank stereo up high anyway it's okay: you just get sound that is a bit bland. Besides, what do you expect from an economy car? It takes a LOT of time to apply sound deadening materials. Especially if you want a multistage setup. So no wonder it's not done at the factory. Plus, it adds a lot of weight a lot of people won't want. I think racer types rip all the sound deadening out anyway and it'd be infuriating for them to do that if every nook and cranny is treated. Anyhow, this is perfectly fixable by an end user (me :-)
It's just a regular base impreza with all its quirks. My only major complaints are the shifter action on 5sp and the absence of a mechanical lock on the rear gate. Steering is a tad bit heavy without of benefit of precision that should've gone with it. But, still, it's probably still ahead of OBW. Plus it sits about 2" lower than OBW so there is a benefit there. But it's not as low as to scrape bits while going over the fortifications that the civil engineers sprinkled around parking lots. Rain gutters, etc. I heard an EVO scraping underbody parts while exiting a parking lot the other day and that put a bit of a damper on my desire to get one :-)
There's certainly no shoftage of ground clearances to choose from in the Fuji lineup :-)
Let me know if a post too much :)