Interesting topic and one I've been looking into myself. Most of you seem a bit further along in your investigating this conversion so maybe you could bring me up to speed. From what little I've learned so far Any diesel engine can be converted to a "Bio-diesel" Engine. And it sounds as though its not that difficult a procedure. Although I'm not sure who offers this procedure as of yet..I've heard you can have it done for about $400-500 dollars. I live in Wisconsin and have found a school in Madison that offers what I believe is a 6-week course in how to perform this conversion. So far the only draw back I've heard is finding a way to keep the veggie fuel heated especially in colder climates. This would have to somehow include heated fuel tank/lines engine block etc...