68 Dart damaged instrument cluster circuit board

Looks like you've received plenty of advice. I'd just add that those who are going to do the same cluster removal, soak those circuit board plugs in some penetrating oil before trying to remove them. I like using a screwdriver to GENTLY pry the plug straight out a little at a time. You don't want to bend the plug or try yanking on it. That particular circuit board is prone to breaking right off. A bit of lube when you re-install them is a good idea too.