Our 51 3/4ton is ready for a new master cylinder with power booster. My first job today was to put the truck up on jack stands. I purchased a hydraulic jack at sears, 12,000 lbs. Figured it would do the job. It doesn't fit under the front axle, at 9" tall it misses by an inch or more. I moved things around and got the truck up on jacks but I started thinking what was the original jack like? was it a bumper jack, a scissor jack? was it stored under the seat? did the trucks even come with a jack? couldn't find anything in the shop manual or the operator's manual we got last week. Anyone with the original equipment out there? Martin