My preference in building this thing would be a 3 piece wing with glassed 1/16 sheeting.
Do you think a pair of YS .91's would deliver the mail? I also have a Webra 1.20 but I thing the ys's are as powerful. Then the jump would be to a Saito 1.50 as far as my inventory goes. I will also us the Jomar/EMS electronic prop sync so I could go with a mixed displacement engine set up or even a Webra 1.20 and Saito 1.50 as the master, would that sound wierd or what!
Sparky