I have quite a big list of questions but I figured I would keep it small to start with. My current issue is parts for or a complete rebuilt heater ac system for my 1975 blazer. The interior portion is ok but I need a new heater core. The engine bay portion case is fairly messed up I was looking for a new shell/ housing and maybe new rubber for the door for separating heat and ac. Any sources for parts or a rebuilt heater or ac system? I also need vent parts, a gauge cluster and exterior Cheyenne emblems. Thanks for any info.