Rich,
I have never heard of or seen a 63' Plymouth Sport Fury with a Poly 318 equiped with a factory 4-speed. But in my Darrell Davis book there it is as an option for all V8 cars just as Bill W. posted.
B - Transmission - 7 - 347 - 4-speed manual.
I have also never heard of or seen a 63' Plymouth Sport Fury with a Poly 318 equiped with a factory 3-speed "on the tree". But here is Larry Bland's car with a not to often seen option.
http://www.1962to1965mopar.ornocar.com/bland63.html
Nick Tiberio
FuryUs63