I just got a 1966 GMC 305 with a V6. PO removed the clutch and trans. 11", 10 splines. 1 1/8 dia. PO may have installed the wrong one. I spent hours looking for a clutch kit, but no luck. Please let me know the part number and a place to order. What other models and years are compatible? My second choice would be to buy a used one, if I could find one. Any help would be great. I'm new to this forum and finding GM parts. Thanks, Wayne in Gilroy, CA
