Hi,
According to Eureka Aircraft the J-Bipe he sells is a short kitbased on re-release of the original J&J/Ral-Vin Industries kits.
<font color="#0000ff">http://www.eurekaaircraft.com/airplanes/J&J.htm</font>
A build ofsuch J-Bipe Ral-Vin Industries kit:
http://www.rcuniverse.com/forum/fb.asp?m=6413002
Picture below of a J&J IndustriesJ Bipe advertisment from Model Airplane News, March 1974.
/Bo