Not when I was flying F8`s. They did hold quite a bit more fuel. That`s why John Glenn used one in his record setting flight from California to the east coast. Alas, that plane didn`t make it to the Smithsonian, it was shot down in North Viet Nam. During my Crusader years (`60-`65) the F8E was the fastest. it was supposed to do 1.86 mach. I had a brand new one to 2.0 down near Yuma. I`ve been told that there was a lot of pitot error involved, but it was plenty fast enough for me. The canopy was almost too hot to touch. That was when I was young and foolish. Later, when the surviving fighter versions were pulled from service, the Vought folks replaced the tail sections of the Photo birds and the engines with parts from the F8E`s. I don`t know what the thrust ended up being, around 20,000 in burner, I think, so the photo birds would have been fairly fast.