OK I dont really have the time to research it properly but there are some options I think I would go to a upull it myself, just so that I could match shaft size to clutch because from limited memory we stocked 11 diff clutch assy. back then.
12V Auto Air Conditioning Clutch For TOYOTA Coaster (AC.106.002)
Santech/Clutch hub for Denso 10PA (MT2302) | A/C Clutch and Parts | AutoZone.com
I have not tried JC whitney either but NAPA showed one in first 10 pages for old school dodge.
If I could only recall the name of the company????
Sorry folks thats my best ten minutes without including e-bay or similar searches.
Also that NAPA unit was a first 10 pages search probbably more in there.