The new 540hp Alpina V8 is based on the N63tu (new N63, now with Valvetronic), no? If so, this is the only way to get the N63tu in a 5er. For whatever reason, BMW only gave the 6 and 7 (and X6, and perhaps X5 too, can't recall) the N63tu for MY2103. The 5 continues with the standard N63.
Granted you don't really buy this car for the tech used in the engine anyway, you buy it because it has 540hp - 140hp more than a standard 5 series.
