How can I buy PEUGEOT 307 2004 RT3?

Hello Friends I have a 2004 model 307 cc and I want to have RT3 installed. I looked at the sites abroad, but I couldn't trust it because I could not translate it. How can I get an RT3 to fit my vehicle and use Navigation. I wish I could have a friend in France that I can trust.

Since my friend has 307, there is a topic I want to ask you. Where did you get the + cable from the battery? I'm asking a friend when I'm mounting it?

You will expand the plug where the hood wire passes, brother.