We have made one-off designs for a couple of different planes in the past, however we are very reluctant to continue doing this. Each wing design comes with significant design costs and time invested, which is hard to justify (and recoup) for one plane. If you have a few friends with the same type, we might be convinced!
We have had Bearhawk and SPA Panther customers make their own light bays and adapt our RV-7 (W-715-1) kits to their wingtips. Perhaps you can do the same?