We prefer cast iron over the chrome rings that come in the big bore kits. It's true that with chrome rings your barrels won't wear as much, but that's because they never seat. We suggest you take the rings off the piston and give them to your girlfriend for bracelets. They're a cheap gift and she won't be around much longer anyway, if you don't stop spending so much time on your motor. Be careful putting the rings on, as they can break. Always use spreader pliers.
Part #: N109051
Side Popout Window Frame Screws (3.5mmX6mm) Frame to Hinge
Screws for replacement pop out window frame to hinge
Application:- Bus (Type 2): -67