From time-to-time, I purchase parts from Rock Auto. I got an e-mail from them indicating that these parts are being closed out: 1970 http://www.rockauto.com/RSS/vehiclefeeds.php?carcode=1132063&m=wc&l=en&html=true 1971 http://www.rockauto.com/RSS/vehiclefeeds.php?carcode=1132119&m=wc&l=en&html=true I don't know if in the future they won't be carrying at all, or just from certain vendors. At least the prices are great, on these parts.
These are good searches to keep. They have closeout deals running all the time. I have these saved for two other vehicles too. I think a lot of these result from buys of large lots of parts that they get from various sources. The bought an outrageous amount of windshield wipers at one point a couple years ago and have had great prices on them for a lot of applications since then. I bought a heater fan from them for less than $20 on a close-out a few years back.