TaReGt, it's theoretically possible to duplicate the G35's sound, but it would probably cost you thousands and thousands of dollars of research in accoustical "tuning" to attain your desired result. (sort of like the Blue Man Group and PVC pipe, but on a much larger scale)
Dodge spent countless hours working on the sound the SRT Vipers side exhaust make.
Likewise most all the Japanese motorcycle manufactures have probably spent millions in R & D trying to copy the Harley Davidson's unique sound, and they must have got awful close. Because even though H.D. swears nothing else sounds quite like a Harley, they've even tried to patent the sound their V twin makes.
It's been suggested that you listen to YouTube videos of different types of exhaust systems, I think that's the best advice. Good Luck.