you won't get alot for the kit, the engines are traded on ebay like cards. So if you like the plane build it. If you wanted to really sell it as a collectable build it then sell it.
I had one converted to turbax fan, the shroud on top was modified to work. Unable to get the Rk fan so just modifed mine.
The plane flys realy well. Had mech rectracts in mine and looks cool in the air.