i have a 09honda pilot booked in and he wants to upgrade front 3 speakers 4 door speakers and change the sub out. i will build a box in the rear storage tray and mount a hifonics pluto amp there... anyone have any info on this truck? the speakers have a yellow cone, so iam guessing pioneer prs. i have listened to the truck and its doesent sound very good at high volume at all..... where is the amp? also he wants to know if he should change out the nav, deck, with an aftermarket one and keep the overhead screen..