I got a putnam hitch off ebay for $89.95 + $35 shipping. Received the hitch in a weeks time through UPS. Installed it myself, it was a pain but I got it done. I'm pleased thus far but others say that this hitch rusts easily. Sellers ebay id is bestlesstruck who I got mine from. Based in Phoenix.
I need one too. I was looking at the tubular Class III Hidden Hitch (#70670), and noticed that the one they sell at Uhaul appears to be the same model, just labeled Uhaul instead. I suspect all the hitches at Uhaul are Hidden Hitch or Draw-Tite (which are now made by the same company). I'll probably have Uhaul install one in the spring when I'll need to tow again. I suspect that these aftermarket hitches are stronger than Ford OEM, and the ratings indicate they are also.
I posted a want to buy on the Swap and Sell forum and a member replied with the information below. I called and ordered the hitch and received the order in just a few days. The hitch was a perfect fit and quality craftmanship throughout.
131 Blue Mountain Road
Fredericksburg, PA 17026
Explorer Sport Trac, no drill, direct bolt-on
Model #25160, class 3, rating: 5,000lb/5,000lb
Manufactured by: PUTNAM Hitch Products USA
This hitch is the round tube type, identical style as the Hidden Hitch & Draw Tite
There is no web-site, paper catalogue, fax, or telephone ordering only!