AeroWeanie From United States of America, joined Dec 2004, 1600 posts, RR: 52 Reply 7, posted (7 years 12 months 1 day 19 hours ago) and read 2124 times:
Quoting FBU 4EVER! (Reply 3): The wing was also a slightly different design.More like the KC-135 (Model 717) wing.
The KC-135, 707-120 and 367-80 shared a common wing. The 720's inboard wing had a leading edge glove that improved the high Mach number drag. The 707-320 wing had a root plug added, along with a new leading edge.