AC Evaporator 2006 Jetta UGH!!!!

Upon removing the AC lines at the firewall, the block for the two ac lines has one stripped port (High Pressure side) Actually the tore bolt was binding in both directions, and now its starting to strip. Im sure It's about to break. How hard is an AC evaporator replacement in this car??? Please share your advice....

Ok, so it looks like all I need to do is replace the expansion valve