Personally i dont like Fusion stuff,id put a bit more money to it and get a decent set of Focal,Rainbow or Infinity components,this is where the money should be spent as all the work and sound quality is done by the fronts.
Usually the best route to go down is power the sub and components via the amp and run the rear fill speakers off the headunit,as you dont want to take too much power to the rear's as it takes too much of the sound to the rear imo.
That headunit looks nice though,im guessing the Bora has a double din headunit already?
Wiring wise get a good quality amp wiring kit that will have the power,earth(to be mounted as close to the amp in as short a distance as possible)RCA leads and a decent fuse to go as close as possible to the + terminal on the battery.
Jobs a gudn
