Engineered and built as a matched assembly, each Hays Classic Clutch Kit will provide exceptional performance, durability and long term dependability in your Corvette. This kit fits 1970-1981 small block applications with a 10.5" clutch and 1-1/8" 26 spline input shaft. The pressure plate is diaphragm style and the clutch disk is organic sprung hub. Each kit comes complete with the throw out bearing and alignment tool.