The Sig Cub is 105" and the Balsa USA Cub is 108"

They will sell you the plans

I think RCM has some too.

These must not be exact scale because the vary?

Was your one piece or two piece? It might make a difference which plans to buy?

you could get a set of plans to see how the wing is engineered. Then draw yourself a grid to build the wing on?

Enjoy,

Jim