I went & ordered a 2765 Hayden clutch & an 18" clockwise fan from hayden, both through O'Reilly's, the clutch is 39.99, the fan is 32.99.

75 Duster, 451 10.87 @ 123.58 NA 97 Z28 6sp., 12.01 @ 115 on a 100 shot 71 Swinger. 360 magnum. 12.58 @ 105 78 cutlass, 469 BBC. 12.70 @ 108 on street tires. http://www.youtube.com/watch?v=Z2kqNmMfheU