I imagine a trip to the hardware store for two bolts, some washers, handful of nuts for spacers and two wingnuts would make a pretty cheap hilift mount on one of the side rails in the bed....
A guy on TTORA fabbed these up a long while back. They are just a piece of angle bracket with a notch cut out of the top and a flat plate welded to the bottom. With a die grinder and access to a welder you could make something like this in an hour or so for cheap. I have had my Hilift mounted this way for over five years and it's rock solid.