I've tried a lot of different mods to the Super Cub. (I own 4) So far the one I'm most happy with is just a stock plane with a rhino 1350mh 3cell lipo ($20 from Hobbycity.com). You will be amazed at the speed and climbing performance. You will have to add a dean's connector to the plane, or add a hobbyzone connector to the battery, or do what I did. I made an adapter by taking a connector from a bad Super Cub nicad and soldiering it to male deans connector. This way I can still use the stock battery if I want to. You will also have to trim the inside of the battery box a little, but it is worth it!!!!!