I am in the process of building an Onex with a ULPower 260. I have finished the engine install and I am working on the cowling now. The motor mount can be builded by Ray, the ULPower disturber. You can use the cowling that comes with the kit with some mods. The fuel system is somewhat difficult. You will need to mount the ECU inside the fuselage. I can sent pics later if you would like them.