The ethanol that you would run in a street car would be E85. It is 85% ethanol and 15% gasoline. I think it is a really good idea. As far as what needs to be done to accomodate your motor, it mainly has to do with rubber parts that werent made for ethanol drying out. My main concern on an older motor would be the carb. As far as where to get it, there are several gas stations that carry it around the US. If you do a little searching on the internet, I am sure you could find a gas staton in your area that has it. It is usually quite a bit cheaper than regular fuel, but it burns about 30% faster because you can mix it at a higher ratio than regular fuel. That is why it makes more hp aslo. Not many people know this buy many new cars are automatically designed to run on E85 they are called "felxable fuel vehicles". Also all government cars, at least in Nebraska, run on it.