Can i use these 70 charger seats

I have a 1971 Dodge Demon 340 that came with beautiful buckets that i assumed were A body demon/duster but i did research and they are B body buckets. The brand new floor plans have welded brackets and are prepped to be drilled for buckets. The question is will these buckets work in the same bucket seat holes? I dont want to spend several thousand dollars between buying buckets and new covers if these will work.

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