I've been looking for a different truck for about 3 years and my first choice is an '03-'05 sport trac, 2nd '03 or newer ranger and i noticed when people say what mileage they get with either of these that the sport trac always gets better and i was curious if anyone knew why? My first thought was because the sport trac has a plastic bed but then it has bigger rear doors and seat to add some of the weight back on. I mainly ask because i found an '03 ranger close by that i'm interested in and wanted to know if maybe the reason could be sport trac specific parts that i could use on the ranger. Any thoughts?