just check this out...
http://www.cardomain.com/ride/358658 thats one of my favorites, so many endless possibilities... Put it this way you can always get the g35, if you dont like it sell, you'll have a descent re-sale value compared to the LS, you've already been the LS route, own one....
Why not experience something different... Just a thought, but then again it is completly up to you...
Tons of aftermarket parts for the g35 Body Kits
Bolt on turbo kit
Like I said so many possibilities.. The ls only has a few..