Just acquired an 84 300D and I'm determined to run the car on alternative fuels (wvo or biodiesel) come hell or high-water. Knowing what I know about the fuel industry and how we all are getting screwed, I've decided to get a bit of revenge. I'm still researching the different systems, and I'm considering a dual-tank system that I will homebrew myself. But, then I stumbled upon this on Fleabay. I'd be happy to hear opinions about it.
http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&item=280444039062&viewitem=&sspagename=STRK%3AMEWAX%3AIT