載せるなら機体中心線位置じゃないかな
https://optipedia.info/wp-content/uploads/ablspur.jpg

F-35でいえばEOTSのあたり
http://aviationweek.com/site-files/aviationweek.com/files/imagecache/medium_img/uploads/2015/09/f-35eots-lockheedmartin.jpg