carpet/ floor mat help

[briank]

I just picked up another 72 K5, non cst . Has carpet in it (don't think its original, wouldnt you only get carpet in a cst?). Under the carpet is a full front floor mat and a full rear floor mat(factory mats.) The rear full floor mat has leveling mats under it too? Is this how they came? I have a 69 cst k5 with carpeting and only the levelling mats along with another 72 cst with carpet and leveling mats. I also have a plain jane 70 that had the original full front floor mat but no rear (propbably because it has never even had a rear seat, not even bolt holes for it.) They dont repop these rubber mats do they?