On a kinda on-topic note, because many former 'Tour owners own Mazda6s, I'm waiting patiently for someone to try a RWD/AWD conversion for the Mazda6.
The platform is designed for all configurations, there are AWD Wagon Mazda6s in Europe, and AWD Jaguars built on the same platform.
No one's tried it with the 6s (V6) in the US yet.
If you're bored and got money, feel free to give it a shot.