OK, first the disclaimers: Don't do cad, wish I could, hope to learn "someday". Thought the quickest way to describe the wing mounting would be pics with notes added. So that's what I tried to do. If you have questions, fire away and I'll try to help all I can!
A couple of notes:
The wing shown is a McLaren/Merc (I think) It is actually a bit harder to mount than the Ferrari wing because the two front mounting holes are further forward and wider apart, but the same mounting solution works.
The Ferrari wing's holes actually line up pretty well with the holes in the WRC nose piece and you can just put long 3mm screws thru from the bottom and put nuts on the top. I made a nylon spacer/brace similar to the one for the M/M wing but with two thru holes. (I wanted the Tammy wing for a few reasons-stiffer, better bumper
, and more scale with the current bodies...)
I hope the pics and notes are understandable, shoot me questions if you need better explanations. Hopefully WRC, Fenix, or ??? will make up a molded plastic piece to do the job, should be a piece of cake!!
Next adapter will be to mount the Tammy rear wing to the WRC pod....