Toyota Tacoma's have one, OEM. You might be able to fab up a way to mount it fairly easy.
My 97 Tacoma had one, looks like it was 96-04 that had them.
here's one on ebay.
Originally Posted by Neil F.
I just saw something just like that. Maybe it was in the Quadratec catalog (or on a web site. Google is your friend)
Now that you mention it, seems like I remember seeing something too.