The only reason I used Airtex was that Shelby didn't have a pattern for a '59...and Airtex did.
He offered to use the existing carpeting as a pattern...but the existing carpet was a home-made job and didn't fit properly.
It still took some cutting...but I was impressed with the fit.
It just dawned on me now that I haven't taken any photos since I replaced the carpet and every plastic piece in there I could find!