I have a 10" sub in the storage where the rear driver passenger's seat. Oh if if you seal the storage box area, it help out the sub too. For my amp for my sub is mounted on a board behind the rear side panel where the storage box is. its a pretty clean install and if i had my seat covered and the cover on, you could really tell that I had a sub there just peaking in. I did that to so i was to keep that rear seat and to keep it conceal so people wouldn't steal it. But yeah they stole my truck and took it anyways. Well in the front dash, i got the alpine type-s 4" which i think is probably give you the most in the low end. I also got the sr5 speaker boxes for it too. So far with the new headunit and everything, it sounds really good from the driver seat, i'm not sure of the passgener seat cause of the sub is on one side.