JBA makes a set, but they didn't fit well for me on a 5.0 / 65 coupe. JBA claims that they've sold hundreds and that one or two out of a hundred doesn't fit quite right (guess I'm just lucky) .
Outside of the fit problem - hitting the passenger side shock tower - the headers appear to be of good quality and well constructed, although the chrome plating wasn't as pretty as it might have been. They're expensive - about $470 through NPD, but are (theoretically) the best ones out there. P/N for a '65 is 1650, or 1650-1 if you want O2 sensor bungs on the collectors. Good luck!
I have the jba shortys on my 66 also the fit is not the best. They come close on the passenger side , and the tubes also leave little room for plug wires .