If you still have the need and the FP.40, try it on a Magic. I did one with that engine, a Macs pipe, and mini servos. Whole thing weighed less than 3.5 pounds. On an 11X4 prop, it had unlimited vertical, and on low rates was so slow and forgiving a kid could fly it. If you have a computer radio, you can kick the rates way up and add plenty of expo and have a ball. It won't knife edge, but it can make you look really good, really quick with a little practice. It is also much more rugged than the twist. I've had three magics, but only one twist. Wanna guess why? Too bad the OS LA's didn't come out as good and light at the FP's. For a bushing engine, they make good power, are extremely light and are very reliable, unlike the LA. Good luck in your search for the second plane.