Does this sound like a legit upgrade package?

[Murphy1979]

It was difficult to find a flush mounting spot for the tweeters due to the curvature of the interior design. The amp is screwed into the 40 side split of the 60/40 rear seat, and its all measured out so if I need the 4th seat I can lift the seat to an upright position without hitting the sub.

 

[Murphy1979]

And for any Crosstrek drivers, the 3.5s required modification to fit in the dash casings. If you do a search on the Sony on Crutchfield it says it is incompatible for this reason, and it required modification to make then fit.