Try these guys:
https://www.stockinteriors.com/moldedvinyl.asp?Itemid=13135&ModelId=479
I bought a vinyl floor mat from them and was impressed by how well it was molded - fit pretty much perfectly. This isn't it, but the image gives you an idea of the detail they put into matching the mat to the contours of the floor:
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First the seat, door sills, kick/scuff plates and seat belts are taken out.
I did it on a hot summer day. Layed it out on the driveway tar for a few hours to get it nice and malleable. Had a big rubber mallet and a heat gun on hand to help form it to the contours of the floor.
They give you a bit of extra material on all sides that needs to be trimmed.
I used adhesive spray to anchor the jute down to the steel floor. When I had the jute smoothed out and trimmed, I attempted to lay the vinyl.
I tried to lay the mat by myself - bad idea! I strongly suggest at least one helper. Get two if possible. Because trust me - this matting is
heavy.