Basil, I have a brand new set of the TF GS ARF wings with the joiner and the servo cover plates that I can sell you. Horizon Hobby offers them for $279.99 plus shipping but they are back ordered which we know they may or may not become available again. So I will offer these to you at $275 plus you pay shipping from WI to CA. Send me a PM and let me know.
The wing for the kit built versus the ARF are significantly different. I have both and they are not comparable at all. I think you would have significant trouble trying to retrofit a kit wing to the ARF fuse. Leo