Finally after a decade decided to delve into dead chevy ac. It started w replacing headlight & dimmer switches. Then leaky front seal becomes new harmonic balancer. Then wife says what about the ac? "You don't mind driving w windows open but the rest of us...". Fragged clutch is sitting w puller tension after heat and blaster app. Not finding reference to compressors w 2 grooves in Rock auto or ebay. I'm not real sure if just a new clutch is way to go as the system has not run in many years. I'm a retired mechanic and my son is fleet tech presently so the work isn't a problem. We're just not sure if it is worth the effort. Thanx,GJ