We here at the RIDES office are all big fans of Mercedes-Benz’s classic sport-utility vehicle, the Geländewagen—better known to those of us here in the United States as the G-Wagen or the G-Class. Designed originally as a military transport, the G-Wagen’s no-apologies boxiness, size and luxury have made it popular with ballers around the world.

Currently, the G-Wagen comes in two flavors here in the U.S.: the plenty powerful 382 horsepower G550 (you can read our review of that model right here), and the shockingly powerful 500 horsepower G55 AMG. The latter model can run from 0 to 60 in 5.4 seconds, which you’d think would be all the speed a 5,721 pound truck with he aerodynamics of a brick would ever need…but apparently, you’d be wrong.

According to a rumor, Mercedes-Benz is thinking about building a limited production run of G-Wagens powered by the 621 horsepower, 6.0 liter twin-turbo V12 found in AMG’s S65, CL65 and SL65. Even with all that mass, an extra 121 horses should help the (presumably named) G65 outrun its G55 brother, as well as any other whip that does the 0 to 60 spring in more than five seconds. If there’s a catch, it’s the price—around $315,000, should it make it to the streets. Dealers are supposedly lookin’ for buyers already, so if you’ve got that kind of cash and want a G-Wagen with a factory warranty that’ll run with Chargers off the light, call your man at Mercedes now! [Shout-out to Autoblog.nl!]

Pictured: 2011 Mercedes-Benz G55 AMG