As already asked, is the supercharger only noisy at idle? If so, it'* a $36 coupler, but if it'* got over 85000 miles, you might as well rebuild the snout. If it'* over 100,000 miles, might as well rebuild the whole thing. It'* not an expensive operation, and can be done in a day.
Use a stethescope to help isolate the problem. Don't forget that on your 93, the Alternator bracket is attached to the nosedrive of the SC. This has fooled a few into thinking the SC is on the way out, when in fact it'* simply the failure-prone rear bearing of the alternator whining and growling in protest.
Consider pulling the belts one at a time to verify which belt path it'* on. Just don't run without the SC belt for too long, as it drives the water pump, too