*****sorry guys, thought my post didn't go through the first time. mod please delete. thanks.*****

hi guys first post, need help, been bothering me the last 3 months.

03 brickyard manual touring with navi

i've searched and read that replacing the stock hu will make my speakers sound better but in my case i have navi

has anyone found a way to install a new hu without installing a separate speaker for the navi?

second problem is that my buddy gave me an 05 navi disk but when i tried the navi screen didn't go on cause it probably didn't recognize the disk. does anyone else have this problem?

thanks for the replies.