VIC T5 Head Unit

[Kombi]

What head unit with gps and reverse camera will work best in my 2007 Tranporter.

I bought the car with the original already taken out and replaced by some unknown brand with dvd , reverse camera and gps
but the screen and cd dvd not working, guessing it would be cheaper to replace then to get fixed, strange but reverse camera still works on screen.

O and anyone with a top brake light and rear wiper for sale ?

Thanks