I have one with a .91 magnum 4stroke on the spacer. It flys great. Probably the easiest tail-dragger to land I have. It isnt a 3D machine by any means but, just a great flying plane. I would agree with Backwing on the cowl and the covering issues. I guess you can get them with monokote now. I'm actually thinking of getting rid of it for other projects(GP Stearman). I hope all goes well, good luck.