Hello! First time poster, just backlit my DMG and been responding to my chiptune itch again lately 
I have a really nice Kitsch-Bent Super GameBoy modded with a line-out, but it's NTSC, and I live in the UK and much prefer the looks of the PAL SNES. I realise that the cartridge plain doesn't fit in the machine, but I wonder if anyone knows of any electrical reasons that the cartridge can't be made to work? I'd be happy to do some cutting on the case or build a pass-through.
Thanks in advance!