i have never been a big fan of kicker. we dont carry their line. but for the price, you could get a jl audio, arc audio, or rockford amp. they are going to be better than the kicker.
we custom build sub boxes specifically designed to fit the truck, and are offroad ready. meaning that this will stay put when you are hittin the whoops, or doing heavy offroad driving. also, you wont need a seat lift. as far as a sound processor goes, the jl audio clean sweep is unit that always works. with the hundereds we have put in, there just doesnt seem to be any issues. however for extreme builds i would use the mosconi 6to8. jl audio once again takes the speaker category with 4 different 5x7 speakers that will just about drop right in. if you want to go for extreme quality, then focal would be the way to go. as far as a subwoofer goes, i have a few different sizes for the trucks. i have built an 8", 10", 12", and 13.5" it all depends on the type of truck and the bass you want.