Isn't that Ray's car w/ a custom body kit? It's not a 2nd gen bumper.
Can you put a 2nd gen bumper on a 1st gen? Sure, but it would require so much cutting/grafting that it wouldn't be worth it. Even imotion who grafted an aftermarket 2nd gen bumper to his first said it wasn't really worth it. It would have been cheaper to use a G35 or similar. He ended up using the upper half of his OEM bumper and the lower half of the 2nd gen aftermarket kit. But there was so much cutting that he almost could have used any bumper. Just because they're the same general dimensions doesn't mean that they have the same mounting points or contours. It's like saying well all cars are about the same size, just different headlights and taillights.