I went w/ pick-up carpet that went under the seats and then used matching carpet the rest of the way back. Its very challenging to do w/ the wheel wells and the door/rocker cut-out meeting the floor. The floor is also different on both sides around the seats.
I like Hemmits idea of going to the riser in the floor; I used a piece of aluminum across the edge to hold the carpet down.
If you do it, post some pics....I was winging it the whole way
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