[Kracka]

Sadly, I think once you modify the firewall to accept an aftermarket unit you may not be able to go back to the stocker. I could be wrong though, maybe you can press in a new stud, or use a regular bolt w/nut instead. If it's possible, I think it's a great idea. Every year Mitsu has further reinforced the plastic so the later ones are actually pretty strong, especially with the AMS cock ring.