G35c all the way, it's just a better car.
People who buy cars to "turn heads and save money" are also the same ones who end up taking their car into the shop more frequently to fix it, pay more in the long run, and keep companies like Ford and GM in business.
In the long run the G35c will serve to be a more practical car, if for no other reason than a better back seat. If you're looking exclusively for a custom or auto-x platform, get the 350. But if you're looking for a ride that'll last you a while, keep you in style, and god forbid be practical, get the G35c or something else.
b