My G-Wagen does high 12's, and yes, it's a 5800 pound SUV. I'd say that's sleeper.

Stock supercharged V8 is 469 HP, mods to that include:
Kleeman larger throttle body
Kleeman ECU
Kleeman headers
Kleeman cat delete down-pipes and high flow mufflers
Kleeman underdrive pulley
K&N Filter
Lower temp thermostat & high flow water pump

It pulls like a beast till about 70, then starts to taper off once the wind resistence of a car shaped like a cinder block kicks in. LOL

YouTube - G-Wagen 0-60 in 5 seconds baby!