We could source it for you but I'm going to be upfront with you and tell you its more of a headache to try this than it's worth!there is a package to add air for the 2009-2013 models ( not sold here) That package might fit
You do not want to deal with the company who sells them. You can view it on Korean auto imports
under 2009-2013 models, I think it's about on the 3rd page.
K5 optima store might be able to order for you, but it might not fit and you
would still have to buy the switch's that fit your car.
I'd never try it