Maybe the rules have changed since my last tour there... you should get by with the Loudmouth (thats with factory exhaust manifolds) ... not sure if you have headers and cats.
They measure the decibel on the exhaust and the Borla ATAK is pretty loud, I am pretty sure that the LM's are a tad quieter than the ATAK system.
@PhaseV... I'm glad to found a hook up, and I hope you get it fixed fast so you can hit the 'ring one day or even hockenhiem
....gawd I miss Germania LOL