Here is a description of my install. I also have pictures of other things I have done to my car or things that I want to do to my car.  Right now this is what my install is:    Head Unit:  (1)Bose    Amplifier:  (1)Cadence UltraDrive:   Total Watts = 400Watt;   Channels = 4 Channels;   Watts Per Channel = 100Watts per channel    Subwoofer:  (1)15" Crystal Subwoofer    Enclosure:  (1)R/T 312-15    Speakers:  (2) Mid range Boss speakers  (2) Component Boss speakers  (2) Boss Tweeters    *I am going to add another Crystal 15" by the end of summer. I am pretty sure that will do a lot for the bass in my car and it should look sweet too.
This is a picture of the sub that is in my car. I will have an actual picture soon.
This is a picture of my enclosure. It is a R/T 312-15 and it is a good choice if you want a Crystal 15".
Now going into pictures of upgrades that I have added to my car. This is a picture of my fog lamps. If you don't have them it is a good investment. They look really nice and every once in a while there is fog so you can actually use them for their purpose.
This is a picture of the new muffler I was looking at. It is entitled Quiet Thunder and is suppose to be one of the best on the market.
Here is a picture of a light I got for my trunk to illuminate the sub with black light. I haven't installed it yet, but I think it will look cool.
Now going into things that I would like to add. This is a picture of the spoiler that I am getting. After I work this summer the first thing I am adding is this spoiler. If you have a Maxima and you don't have a spoiler, then I think this is the best one to get.
This is a picture of the rims that I am getting. I should have these by winter. They are 17"-9" and they are called Cobra style racing rims. As far as I know they only fit camaros, mustangs, and maximas.
Here is a picture of Cold air intake, which I probably won't get for a little while. Because right now I am going for looks both inside and out and sound quality. This is a great upgrade if you want to get about an extra 20 horse power out of your car. Let the engine breathe.
This is a picture of the coilovers for a maxima. They are very expensive but well worth it. But I am going to wait a little while before I get they boys.
This is a picture of a rear sway bar. This is probably the cheapest and most effective suspension upgrade out there. But only if you make quick turns at high speeds.