You might be able to take the servos, receiver/esc unit, and battery and use them in a GWS Slow Stick. It's tough to say for sure just from the parts listings at Horizon Hobby's web site. They do sell a pretty complete assortment of parts in case you'd rather just rebuild the Super Cub:
http://www.horizonhobby.com/Products...arts%20Listing
Good luck, and good shopping!