Hi Josh,

no, it's rated 330 Nm. 5WA330 says the Nm number.

Dual mass flywheel: well the one that was used was not new when they've build tha car, but it was fully functional. After about 12 K miles it was gone. So in my opinion that is one of the parts you can't improve by a reinforced version and will allways be a problem, because the 5.0 has more torque than 400 Nm and the mass moments are higher. But while you have a 5.0 MT you'll have much fun. And because it's allways it's an indiividual conversion, there's allways the possibility of a week link in the chain.

Regards
Markus