MR Matt is right,Aggressor II fuse is smaller than the Aggressor III,Maverick,and the Ultra Viper fuses.Gary's conversion is for the latter fuses.I have done 3 of these conversions,just finishing a Ultra Viper,with Maverick wings and full Mueller converson with bypass and JeT Tech tanks.The problem with the Aggressor II is the wing area when weighted down with the fuel,and room in the fuse for equipment.