Looking for original-type black floormats for my 64 SS convertible with bucket seats. My understanding is that GM's mats for this period were all the same size and the dealership trimmed to fit the various Chevrolet models. Also, my understanding is that these were rubber, not vinyl, and would have had the bowtie logo on each mat. Can someone confirm this info for me? Looks as if most of the aftermarketers have a "GM-licensed" rubber trim-to-fit mat. Any recommendations on where to buy, or are they all the same? Any opinions on the rubber vs vinyl? Thanks