Got a thoughtful reply from the Fiero vendor regarding his shift cable kit and he said the cables won't work on the G6. Sorry, about the dead end, but I had to ask.
The vendor did refer me to a company that specializes in making custom cables. They are California Push-Pull Inc. (
California Push-Pull Inc. Cable Specialists Based in Chico, Ca.). They have an extensive catalog and I have no doubt they'd be able to duplicate the G6 cables if anyone had a sample. If there is sufficient interest, it might be worth a go to contact them. Good Luck.