They do sell kits/parts that you can get comeplete with a separate elec./hyd pump if you are not concerned with authenticity. I installed one in my 87 chevy pickup. It worked very well and was a blessing on many a landfill trips. It did require some fabrication/welding to install. Grigg is right about the strength of your bed. Make sure it can handle it, even if you don't intend to dump heavy weight.
Bill


~ Billy
Old Dominion Stovebolt Society: Exotic Animal Division
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I've got a trailer and I'm not afraid to use it!