I don't have an exact number, but according to this a 3x3 crib built out of 4x4's supports 55,000 lbs. The 986 weights just under 3,000 lbs, and that is split between 4 points.
http://www.fireengineering.com/articles/print/volume-165/issue-9/departments/training-notebook/timber-cribbing-use.html
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1999 Ocean Blue Metallic Boxster - blueboxster.com
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