Aircraft Upgrade to XP11 : Douglas DC-8 Series by Wilson's Aircraft   Mike Wilson has upgraded his Douglas DC-8 Series to X-Plane11. The upgrade is known as 11x and also adds in another variant of the DC-8 family in the DC-8 -71 passenger version. This goes with the already included in the package the original 61, 63 and the 71F (Freighter) variants.   I love these old birds, they are interesting and a more manual analog style of aircraft to fly and they give you more feedbac