Incredibly Engineered & Manufactured: The Last NA (Article Below)

(AM repost) The engineering behind BMW's last (not counting its DI variant N53) NA engine, the lightest production 6 cylinder to date (and powerplant of the 1 series, 3 series, 5 series, 7 series, X3, X5, and two Z4s) designated N52, was incredibly innovative. A few variants make 32 more bhp than the S52 M3's 3.2 six… » 12/04/14 11:30am 12/04/14 11:30am

Any ideas as to what this engine is?

It is the link image to an article I saw today, and the article doesn't even have the picture, so there is no caption or any information that I saw. Reverse GIS came up empty for me, so I'm assuming it is a stock image. The engine is obviously huge, and appears to have 7 main bearings, making it an I6 or possibly V12.… » 4/30/14 1:01pm 4/30/14 1:01pm