well... what type of sound you looking for? i would use Shallow mounts if youve got the space for a normal sized driver.
Im sure those enclosure's arent built to those Kicker subs specs. Them Kicker subs like bigger boxes and in our KC's we dont have much volume. so im sure they wont sound the best
EDIT: it says the enclosure is 13-1/4", unless the top of the box slants towards the hump under the seat us KC's dont have 13" to spare
Also even tho that amp is 400w, i personally wouldnt use 8g. I use 8g for my Subs alone lol, get a 4g amp kit