Oh man, I love that blue carpet! Very clean looking! I used to have a 74 Monte Carlo the same colors, and I loved the way that color carpet brightened up the interior.
I think alot of companies use AAC as their drop ship vendor for carpet. I've used them twice with the loop style and had good luck each time luckily. LMC seemed to have higher prices for everything when I compared my list of about 10 things I wanted, but I did not compare carpet.
http://www.classicparts.com seemed to have better prices than anyone else generally speaking.