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I pulled these cylinder heads off a 97 5.9 motor that was in my truck with 58k miles on them. Now I am going to go with aluminum heads instead of running these on the built lower end. They have been mildly ported/polished as I did not want to thin out the chambers. My intention was clean up the castings for improved flow. Valves are stock as are the springs. They will come with all the original components (valves, springs, seals, etc.).