40 Ford Gears and so on in a 39 Case?

I'm pretty sure I remember the answer to this question, but.....being a geezer, I don't fully trust my memory. I have a 40 Ford gearbox...tranny, in excellent condition. I also have located a bare 1939 case. My question is will all the internals from the 40 pop into the 39?
I can imagine some replies suggesting I do this or that, but this is not my question. I am firmly set on swapping. If not feasible, I will fabricate a floor shift conversion for the 40 box.
By the way, this a GREAT site. LOTS of useful info.

 

Yea, they will fit. You can use up to 48 gears.

 

Thank you. I was pretty sure having done the double research with parts manuals. THank you, Mike. Very much appreciated.
Bill

 

http://www.vanpeltsales.com/FH_web/flathead_transID_3speed.htm

 

Just put a set of 46 gears in a 39 case. Works perfect.
Butch

 

If you decide to leave the '40 box in there, here's how to make a floor shift:

http://www.jalopyjournal.com/forum/showthread.php?t=97533