Turning a 308 into an event car

It's still the early stages so I'm not going to give out too much information, but right now it looks like I'm going to be shipping the 308 over to Europe for an event next year, basically a "Tour" event (hint hint).

Any modification recommendations from people that have done this before? The car needs to be street legal. I want to add a proper FIA approved fire system. Anyone done this on a 308? Best vendor? Best place to install the tank? I'm not looking at turning it into an outright race car.

Anything else is greatly appreciated.