My 12 bolt rearend in my 70 Camaro was leaking and discovered that the pinion nut was loose...way loose, could turn it with my fingers. Ive got a new nut on order and have done searches here and found I need to torque it to 150 ft. lbs. Am I gonna be able to do that with a torque wrench without the car being on a lift where I can get good leverege? Whats the best method without availability of a lift? Rearend on ramps....trans in gear.....wheels chocked......or what? Any advice on the method to do this would be appreciated.