I believe dye I3 ears fit relatively easily, the events ears fit with some minor mods as well. I used the pre cut hole on the event ear, had to cut some of the ear away so it would fit the flex frame properly. Then I put a screw (much like the hardware used on the flex bottom to hard ear) between the bottom tab on the frame (the part that sits immediately behind the bottoms when attached) and the ear piece to keep it in place. Snapped the bottoms on and good to go.
