They are claiming the horsepower has been increased by 50% and yet it is still going through the CVT. While that may be great for a one-of-a-kind concept car, it is highly doubtful that the CVT would survive for long under that stress in the real world. The Murano GT-C is simply a show car used by Nissan to bring attention to the Murano. Nothing more.
I assume you meant longitudinal (front to back) and not transverse (side to side). Yes?
If you mount the VQ longitudinally you might as well go all the way and install a manual six-speed and make it rear wheel drive. Now start thinking of all the upgrades you can do. You would have an SUV with the Z's pedigree.
I just gotta say that I really like the idea of OEM supercharged VQs. I wouldn't trade it in and get a supercharged one just because it had a supercharger. But when I was ready to trade in, I would opt for the supercharger all things being equal. Turbocharged would have the opposite effect on me.