Ahhhh, the Zingo….I have two of them here and they both were used for FAI competition in the 70’s. Both have Rossis, VIT, brakes, Pink and yellow silk….My son used them as trainers but I can tell ya they do not do too well on 5 second runs. I think I once said that it was nothing more than a powered test glide. If you do make one, make sure you use good spar material on the wing. All in all, a nice airplane that should do well in AMA with a good engine on the front.