Thanks for the positive comments that have been left on this site. It is still a work in progress.
Wheelbase is the distance from the front wheel to the rear wheel. For all 1961 to 1967 Econolines the wheelbase is 90 inches.
On the passenger vans, such as Station Bus, Falcons, and Club Wagons, the wheelbase (W.B.) code on the vehicle data plate is left blank.
Thanks for the positive comments that have been left on this site. It is still a work in progress.