Hello Canuck 2005. I have the Super Skybolt with the Saito FA-125 on it. I also have an 1800 mah nickel metal hydride battery for the receiver. Everything is installed in the recommended location. I had to add nine (9) ounces of weight to the firewall to get it balanced. The plane flies like a dream. Lots of power and lands like a trainer. You will love this plane!