eka1 it is a thread here in this forum, there are 2 one for the PZ cub and one called Shun Da Cub, both are good threads and can offer you all the help you need for the mod, I added the ailerons and steerable tailwheel to my SD Cub and it was easy and made it a whole new plane, A few things have to be done for it to work right but it's all fairly easy. Good luck with it