All you would need is the 6.5 qts or what ever the owners manual calls for. The reason its 14 qts total for a colmplete over haul is because there are 7+ qts of fluid between the torque converter and the internals of the transmission (not including whats in the pan). So basically if your transmission was pulled out of you WK and completely torn apart and rebuilt with a new torque converter you would need 14 qts of fluid to properly fill it. Since you are just dropping the pan and changing the filters you only need the 6.5 qts.