The epitome of Jet Age style. I don't much care for John Travolta as an actor or a celebrity, but I have no other choice than to admit the man has a refined taste in aircraft.

(I'd probably go for one of the larger Gulfstreams, myself, in a world line where choosing which jet aircraft to buy myself were a problem I had - I have just enough hands-on flying experience to really, really want to know how something that size, with that powerplant, would handle. But if I expected a need to carry more than a half dozen or so passengers, I'd go for a 707, too.)

Only in general shape. Dimensions, internal systems and even the type and gauge of aluminium were different between the C-135 and 707; Boeing had to go back to the drawing board when Douglas started cutting metal on the DC-8, and the redesign process for the 707 led to a cascade of changes.

About 20% of systems and components were common ( such as the cockpit windows ).