I just got this kit from a visit to my local hobbie shop. It calls fao a 40 size motor with a battery mounting on the motor mount rails. So i got the YS63 for it.
There is a strange and different way of connecting the wings together called a "floating spar".
Before I continue building, anyone want to share some info on this kit.

PS- I believe it's a newer version because there was a update added after the manual was printed. (very little english in the manual) it almost all german.