The 240.
Reason being......and don't get me wrong, thats a sick ass 350Z.......but I just feel it took more work to source out an older car and put in the time/money to get it where its at today. With a newer car, like a 350Z, all you need to do is find a relatively unabused example, which isn't too tough to do, and then start modifying it. I'm not hating or criticizing by any means, because my current car is an '07, got it brand new, and had to do nothing to it to "prep" it for modifications so to speak. But, I also had an '88 RX-7 at one point in time, and it took alot of "repair" work to get it to a state where I could actually start tweaking the car from an aftermarket perspective.
But I wish both owners/cars the best of luck, and both are equally worthy. But the 240 has my heart