Car Audio in Early-A bodies?

i am running 2 5.25 lanzar 2 ways in the door and 2 6x9 lanzar in the package tray in little boxes i have a 400w 4 channel amp for the accoustics and a 800w pioneer mono wired at 2 ohms and 2 - 10 inch cerwin vegas in a bandpass box

all in a 64 dodge dart gt 2dr