I am looking for some good websites to find parts for a '70 beetle. Anybody know of any?

Pick up an issue of Dune Buggies and HotVW's at your local newsstand. Most of the advertisers in there have websites too.

Here's a few good ones:
http://www.aircooled.net
http://www.mooreparts.com
http://www.chirco.com
http://www.cbperformance.com
http://www.rimcovw.com

Here's one to avoid at all costs:
http://www.mofoco.com