Some of the Hans stuff....

A V12 and Hans Stuck at the Wheel: The Original BMW X5 M
BMW X5 on the Ring - Car News - Car and Driver

"From his website:
He finishes the season with a win in the Petit Le Mans co-driving with Boris Said and Bill Auberlen. He is honoured to set a record time at the Nordschleife driving the 750 horsepower, V12-powered BMW X5 Le Mans. With a target of less than eight minutes he covers the historic 20.8 kilometre circuit in 7:49.92, reaching 311 km/h on the straight."
and... this is amazing sounding...
YouTube - Kesselberg BMW X5 V12 Le Mans H J Stuck
YouTube - BMW X5 Le Mans

Still- anyone know of numbers for a 4.8is?