This is one door vent outlet that i have left for sale $60. i use the other one just to replace the inner fin's and now i have an extra one.
Delorean Motor Company has a new one for sale but you will have to buy the whole thing. there part # is 100761. if you just need to replace in inside fins this is a easy fix. if you have any question feel free to pm me back.
I can meet FTF or i can ship on your dime. i will take Paypal but as a gift.