Frontier Nissan

My Budget Is 14k And Below. I Want A Nissan Frontier With Less Than 50k Miles On It, V6, 2 Wheel Drive (dad Wont Let Me Get A 4x4). It Has To Have 4-doors. Considering Everything Above What Is The Newest Model I Could Possibly Run By? And What Do You Think The Odds Are That I Will Beable To Find One To Meet My Specifications?
When I Say, What Is The Newest Model I Could Get I Mean Like Could I Get A 05? 06? 07?