I have built these before. It shouldn't be too much work to make new ribs. I have the plans so if you wanna copy some parts or sump'n just give me a shout. I belong to RCRC. I built the 'D' but made it look like the GeeBee'X'. It was really cool in its black and white livery with orange trim. The Coverite 'Jeep' has to be the sweetest flying airplane I've ever owned. I have fond memories of it!