I guess you would have to acquire the required physical cartridge hardware, extract the ROM (8192 bytes) from the CRT file (e.g. using the 'cartconv' tool from the VICE emulator), and then "burn" the ROM file using an EPROM programmer. Probably not worth the effort for such a simple game, though.
There's a discussion in the Lemon64 forum about an issue with EasyFlash 3 and some older boards, including the MAX. I don't know if similar issues apply to e.g. Versa64Cart and Kung Fu Flash.