yes, i do have the room. the truck had 4 re audio mt 18's in it before i had purchased it. i have all 0 ga wiring ran. do you guys think a 150 amp alt. and a 3100 xs power batt will be able to supply enough juice for the brz3000.1d (3000w rms) im no car audio newb, ive just never had a truck before so im not sure how much little tweaks can make a difference. in my car i have 2 dd3512's on 4000w w xs power batt and a 200amp alt. w. all 0 ga.