Looking for info on upgrading the sound system. I want to keep the head unit just wanting to replace the 4 factory speakers with JL Audio and adding 1 10" JL sub along with JL's New marine amp MHD 900/5.

Has any one did this or a simular upgrade? if so do you have any pics or maybe better suggestions? Also what size are the factory speakers 6".5"? as I would like to upgrade to the 7".7" is this possible?

The reason I am asking some of these questions is because I do not have the boat as of yet. I am trying to get things ready for when I pick up the boat. Thanks for any info.