have had my mind set on getting an 03 cobra but i might put it on hold after seeing the navigator. i really did like the cobra, but that can wait. i know when i get it ill have to sink some money into it but the lincoln will be fine as is. plus i work construction so if i got the cobra i wouldnt be able to trade my 98 tahoe in cause i would need it for work. just wonderin, anyone on here have a navi.- im lookin at 2003 and up. any serious common problems. from what ive read they need 91 octane or up. dont really like that for a daily driven truck, but if i got to i got to. gas mileage? sure not good at all but i would like to talk to someone that owns one. that thing is like a bentley compared to my tahoe