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Those are "Crane" roller rockers, exultant start, i like the cam "72 GTS recommended, push rods, Moroso , the cam kit will include the springs, I would recommend switching over to a aluminum head, their are now a number of after market choices, Air flow research are the best.Edelbrock makes a great water pump. buy a stud girdle, 750 C.F.M. carb, high rise intake, = 500+ h.p.