From SAC: This set is for all early Block variants (1-20) that use the 'light' style landing gear ... check your references. For quick visual identification: the landing lights are mounted to the main gear struts ...EXCEPT for those aircraft that have been refitted to accept FLIR pods. These jets have the landing lights 'stacked' inside the nose gear door. Kinetic's A/B kit has this feature. Remove the main gear landing lights when modeling an aircraft with FLIR pods. *ATTENTION: when using this set with a Kinetic's kit, slight enlargement of the mounting holes for the main gear is necessary.