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Brazil has been doing sugarcane ethanol for over 3 decades, so no surprise it is readily available in your area. What are the Porsche GT4s running and what is the cost? You do seem to run some longer races and do you have a fuel cell now, because burning the alcohol off like a drunk in Vegas could mean you have fuel starvation with the El Crappo saddleback tank. I know it is a convenient trend and motors run cool, but if you are going to do some Enduros or if races tend to run 35-50 minutes , not sure I see any advantage in the long run.