Indeed, although almost unheard of in the US, these twincharged engines have been available over the years in the Japan and Europe. The "special" edition cars haven't sold in large numbers but were readily available at the time of release from dealerships.

http://en.wikipedia.org/wiki/Twincharger http://en.wikipedia.org/wiki/4AGE#4A-GZE http://en.wikipedia.org/wiki/Nissan_MA_MA09ERT