I've got a soft spot for the 2008-11 Focus. Bought one new in 08 and I've owned 3 now. This generation didn't get any kind of performance trim from the factory(i.eSVT/ST/RS)and doesn't draw much attention from the car community, so there's not a lot to choose from when it comes to aftermarket goodies.
The goal is a clean, OEM+ build that stays under the radar to most, but catch the eye of an enthusiast or two.