[vlad]

The front and rear Si badges aren't interchangeable; the front one has 2 screws that go into the emblem from the back, while the back one just sticks on.

The front right fender linear is probably an aftermarket one, that's why it doesn't fit perfect.

Looks like the TPMS light is on in the pic with the engine started. The sensors could be missing from the wheels (not a big deal, just that the light stays on and your TPMS won't tell you when your tire pressure is low).

It's normal for the bumpers (and the rest of the plastic parts) to be a slightly different shade of color than the metal parts, for some reason this is how these cars come from the factory. This is more obvious at certain angles.