trickpony it is possible to mount the 30 on it, but it will take some work. The plane has a firewall to prop distance of 150mm or 5.9" which is much shorter than the engine. you will need to either cut off the firewall and move it back or use shorter standoffs and bury the carb through the firewall. The plane is showing around 13 pounds which is a little heavy for a 70" wingspan plane. I would guess it must be built rather strong as most of them now are 9.5 to 11.5 pounds for a plane that size. So with that in mind it is not going to fly as well due to the higher wing loading.