I wanted to take a moment to introduce myself. I owned a 280zx back in the mid - 90s. Loved that car. I vowed to buy another one day. I recently purchased a bone stock 2004 350z convertible, with 60,000 miles. I'm already living the new one. I plan to keep it stock-ish. I would mind adding a little extra umph. Some of the FB pages are more concerned about wheels and bumpers. I'm contemplating small changes like air filter /intake and maybe a plenum spacer. Any thoughts?