I have a question for the group, any suggestions for an easy ( or as easy as possible) fit to add a full fairing to a Fatboy, without too many expensive modifications. I want one with a sound system and GPS.

 

I don't know what Germany has to offer, but here in the states there's a few different options. You really need to set a budget and then decide what's right for you. Several guys in here run a Reckless Fairing with one of their stereo set ups. I on the other hand opted to go full custom audio, you WILL NOT get the volume out of a premade system like you will building one with components, my system spins nearly 500 watts out of two 6.5" competition speakers and 800-watt AMP. If you're a highway guy, you're going to need the power.

 

Wedge fairing. I'm mounting one on my Pan America. They offer a sound sytem too.

Fat Boy - Wedge Fairing