NMW out of North Jersey used to make towing hubs, along with tow bars and tow tabs.
I don't think they are still in business.
There was an article in the mags back then on how to make a set, as Rick described. If I remember correctly, that's a laugh, as I'm now of the age of CRS, they used an early Chevelle front hub and spindle assembly with the appropiate bolt patterned heavy, round plate weled on. They drilled a hole in the Chevelle flange large enough for a socket and extension to get at the inner studs.
Here's a link to some pics, they seem to be a lot newer than the Lakewood, NMW days.
I don't know anything about them, just passing along a link about the pics. My son was just talking about hubs the other day and was Googling for some pics.
http://www.biggerbids.com/archive/au...EHICLE-RV.html