Ok - do a search on Pierce Sales, they make one, I found about a half a dozen surfing the web. Also, Northern Tool carries the kit. If I recall, they weren't cheep, like around $900. If you have or intend installing a gooseneck hitch, they aren't compatible. I ended up with a EZ-Dumper insert for $535, that I insert into the bed, works great but is a pain when I want to tow the gooseneck.