I need stereo advise...

I have built a box to fit in the extended cab of my ram and I want to run the speakers inverted...box is 13x18x57in(upside down so you see the chrome baskets) I will have 4 dub1000 subs. will it sound ok? do i need to have it ported or can I leave it sealed?? I will have to run them into a mono amp which is a bazooka el 1500 I believe. how do I wire the subs all together into the mono amp? i need help....obviously.....

man that's 7.7 cubic feet, you didn't say if they are 10's,12's,15's? need to know spec's on subs to figure out if ported or sealed. and what impedence are they?

10-s i don't know imp. but each sub has 4 positive and 4 negative terminals how can I tell? they are dub-1000 series subs
let me know if u need anything else---thanks...

i found out they are dual 4 ohms 4 10's

why dont you run this in audio video section

Are those measurements the outside? If they are, then you have an internal volume of about 6.1ft^3. That isn't quite big enough to port it with 4 10's, but would be fine with 4 10's or even 4 12's sealed.