Hi folks, I put in the Pioneer AVIC-Z3 head which has a 7" 16x9 screen, that's a bit larger than the other Pioneer decks, and IMHO better than the new F-series for several reasons I won't go into ;) You can get a factory dash kit which fits this unit nicely and matches your smart's color better than the SmartsRus or other aftermarket kits do.
Cheers!
--StarLord