What Enclosure Would Be Louder And Sound Better

[pcchris]

'm trying to decide whether to get a wall (clamshell)

or box subs up port back flared aero ports

i'm in an 02 suburban

and with the proper wall can i make my truck flex all around or just the front end

i have 4 hdc3 18's copper on the way.....

and what should i tune to in that model suburban i want to move some air and be loud 35 hz 38hz tell me what will bang and get low......

and what can i tell my installer to do to my enclosure that normally isn't done like tell me about 45's and that stuff they coat the walls of the box with i think its fiber glass resin.....

but over all i want that carrying bass where i can flex and people can hear me thundering under freeways and tunnels

also should i sound deaden?

will it help or hurt my sound?

also what places should i deaden especially for people who have experience with suburbans........