Greetings from San Diego, CA! We recommend you do not use an old carpet set to make a pattern, as after so many years in service the original Brazilian Puma carpeting material will likely have shrunk due to heat and humidity and you will end up with something not fitting right.
Regards,
Alan d'Escragnolle
Purring Pumas, Parts to Keep your Puma Purring.
www.PurringPumas.com