Some of the HOB kits were from designs by Fred Reese (and others) originally published in RCM, etc.
If you ask in the Vintage forum you will be able to find out who designed it, and chances are it was published before it was kitted. It could even be this one:
http://www.rcmmagazine.com/store/sto...KhZQWMqPA7v6n2
David