I also used jim carters material because from all my searches he had the very best match to original maroon material in my 49 gmc. My seat still had some original pieces intact in the channel around the seat and I will say his material was basically spot on. I was very very happy with the fit and quality of everything from JC. I bought the batting material from them also. Its not a “fun” job but I did it in probably half a Saturday.
