I own a pair of Pacemaker Crown Graphic 4x5s and a couple of Graflites. Everything you ever wanted to know about Graflex (well, almost everything...) can be found here:
I have a Graflite with a 5 inch reflector that fits both my Speed 4 x 5 and my Crown 2 x 3.
The bracket clips on it are adjustable for spacing/height to fit the different sized brackets,
and rotationally to mount on either side of the cameras.