i have a post up asking where to buy the split door as an add on. so far no replies. however i have flown 2 different 7eca's with the split door. some call it a shooters door. anyway, they work differently than a cub. the 2 i have seen opened on the top like a cub and can be opened in flight up to 90mph indicated airspeed. the bottom still hinges out like a standard door. really cool with the side window that hinges full open. sure wish someone would jump in with where to get one. hope this helps.
CFIIGUY