Car may ( or may not) have 18k, but minimally she’s been fluffed, and I suspect far from totally original. But still may be low mile real solid driver. Jmho
I’ve seen a few low option real low mile cars get purchased, then ‘robbed’ of the very hard to find original wear and tear parts, like interior, carpet, hood insulation, clips and wires and bolts, etc., all to be used on a rare car such as a Z or BB car or COPO, etc. And then flipped.