Yes, that is a Nissan SR20DET from Japan. Its out of a Nissan Silvia.
The wastegate is loud enought to turn heads 2 blocks away. It has a very nice tone to it, and only gets loud when your on it, which means it loud all the time
Here is the dyno video of the SR27 @ 15psi.
http://www.spracingonline.com/videos/dino.wmv
http://i59.photobucket.com/albums/g285/Grkmf3/24-1.jpg
http://i59.photobucket.com/albums/g285/Grkmf3/25.jpg