3F2060 3F445F GFX N "Main Font (VWF, 2 bit plane)" 2008.02.12
0260E6 026145 DATA N Character width for standard table 1 characters 2007.08.24
3F8E60 3F9C5F GFX N "Item Font (Fixed Width, 2 bit plane)" 2008.02.12
The main font is at 0x3F3060, and is variable width. It's used for most of the text in the game.
The item font is at 0x3F8E60, and is monospace. It's used for menu text.
Monospace informationIf you copy the data ranges above from one ROM to another, it should add the extra characters to your hack. You might need to mess around with Temporal Flux's translation menu as well.