I reused the original foam in my seats, it was in good shape. I bought some 1/8" steel rods at HD. I used one piece to make a T handle hook to push from the bottom, through the foam and around the rod in the seat cover and pull it down. The bottom of the front buckets was definitely the hardest piece to do, especially trying to get the wrinkles out.
Check your old foam if you have it. You'll probably want to slit the foam about halfway through. Then push your hook through from the bottom, may have to cut it open to get the rod through.
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Hank
70 Chevelle SS396(454), M20, 3.73
My Chevelle
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