That's going to be tough, I checked around on Corvette Forum, there was one fellow asked this same question 11 years ago.....not one response.
I believe those dimensions (templates) would be proprietary due to the fact there are competing after market Corvette parts suppliers selling replacement carpets.
If you could track down a restorer who's working on a '59 resto and trace out the old carpets, that may help. Good luck.
google '59 Corvette replacement carpets, some prices aren't too bad.