Just to clarify everyone on this, here are the DC-10 Variants
DC-10-10: Basic Version. Span: 155 feet, length: 180. No center gear. Maximum Takeoff Weight: 443,000 lbs. Engines: 3 GE-CF6-1 & -6, each producing 40,000 lbs thst. The GE-CF6-6 produces 41,000 lbs thst. About 3,200 nm range.
DC-10-20 (Became the DC-10-40)
DC-10-30: Long-Range version. Span: 165 feet, Length: 181 feet. Center gear to compensate for increased weight. Maximum Takeoff weight: 572,000 lbs. Engines: GE-CF6-50C: producing 52,500 lbs thst. Range: 6,500 nm. Weight is primarily increased by increased fuel capacity. Note: The wings are enlarged by 10 feet.
DC-10-15: Only 7 were built, all used by Mexicana. They featured enhanced engines for Hot-n-High performance. Same dimensions as DC-10-10. Engines produce 46,000 lbs thst. Max Takeoff weight is the same, and so is range.
DC-10-40 (NWA Version): Intercontinental-Version, Length: 181 feet, Span: 165 feet. Powered by Pratt&Whitney JT-9D: 49,400 lbs thst. Maximum takeoff weight: 558,000 lbs. Range: 6,500 nm. Features a center gear like the DC-10-30.
DC-10-40 (JAL Version): Same as the NWA DC-10-40, with the exception of more powerful engines (53,000 lbs thst), and a higher takeoff weight (585,000 lbs).