how big are the speakers that come with the "speaker upgrade pacage"

 

They're the same size as the non upgraded just have a better cone material. Don't bother with it unless you absolutely don't want to do aftermarket. They'll still sound like poo compared to inexpensive aftermarket speakers. Just be forwarned, going aftermarket is not a drop-in replacement. There's tons of info on the these boards and at scoobymods on this.