As far as I am aware, the engine is exactly the same, except for the intake tube. This one has baffles in it, which is why the G35 folks hand around like a bad smell on 350Z classified sites to buy the stock Z tube. Suspension parts are interchangable, it just effects the height. I think stock 350 shocks, and springs lower by an inch, but I'm no expert. So, engine is the same, the chassis is 'the same' except the G35's have a slightly extended one I believe.
So... Shagging stories.. Well, what I do is clamber into the back, panting like a dog in heat, and drop trousers, and hope for the best...
Seems strange they do that to the intake tube. Also, since it is the same engine, strange how the battery and brake fluid reservoir are in opposite places in the engine bay.
Too much information surely.