Which 2x3 Graphic are you thinking of? Miniature Speed Graphic (also called Mini), 2x3 Pacemaker Speed Graphic or 2x3 Pacemaker Crown Graphic (same as, practically speaking, the Century Graphic)?
The key dimension for easy lens fitting is the size of the front standard's lens throat. I don't know how big the Mini's is; the Pacemakers' are all 48 mm square. No idea how to tell whether a lens will fit in a closed Pacemaker, I suppose one could measure the distance from the front of the lensboard to the inside of the door with the door closed and the Graflok focusing panel removed.
If the camera has a Graflok back, a lens whose rear cell's diameter is > 48 mm can sometimes be mounted on the camera. Unscrew the rear cell, mount board with shutter and front cell, remove the Graflok focusing panel, reattach the lens' rear cell to the shutter from behind. This can be fiddly, won't work if the rear cell won't pass through the back's gate.
For general information about lenses' dimensions and a table of short lenses that can be used on 2x3 Pacemaker Graphics, click on the link in the first post in this
https://www.largeformatphotography....to-look-for-information-on-LF-(mainly)-lenses discussion and download the pdf it takes you to. The pdf's index won't work in on-line pdf readers.