Audio Systems: DVD indash/Rear view camera installation, rear view camera, vw jetta

Question
Ok I got a problem here idk anything about car stereos and i just ordered a Boss BV9555 7' DVD/CD Double DIN in-dash touch screen stereo demensions are 7.1 x 4.2 x 6.8 and a XO vision rear view camera (didnt even do my homework just couldnt pass up the prices) for my 2004 VW Jetta and i have no idea if it will even fit or be compatable. if your could give me some pointers on what i may need for installation and if my other in-dash would be a better fit or easier installation its a Power acoustik PTID-7002NR 7' Oversized single DIN (which i like this one alottt better)demensions are 10.2 x 9.2 x 6.8 i know this is alot and i really would thank you for your time if you could help me out here Thanks you so muchhh!
Spencer !

ordered from amazon.com

Answer
Here is the best and easiest way to learn if it will fit and if not what you need to make it go.

Crutchfield is the expert on things like this.  Go to their page or just click on this one:

http://www.crutchfield.com/app/car/carselector.aspx?lp=%2fapp%2fCar%2fMyCar.aspx

and walk through this "outfit my car" sequence and when you get to the end you will learn what the mounting requirements are, sizes, equipment that will fit it and so on.  They are good and they don't make mistakes.  Hope this solves your installation.