Need info on 72 A body bucket seats

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The 72 up foam is different, it deletes the 1971 back spring basket so it is extra thick to fill the void.
Thanks for the info..But would new foam and upholstery for 71 seats fit the 72 frames?
The 72 up foam is different, it deletes the 1971 back spring basket so it is extra thick to fill the void.