e85 would be your best choice it will make better power and your engine will run cooler. the best part of it all is its cheep. now you will use more of the e85 then gasoline. your best bet it to get your self a good holley carb perferably a hp series call quickfuel they sell a complete kit its about 250.00. it comes with floats metering blocks air bleeds and needle and seats. call them give them your combo they will be able to get the jets within a 2-3 either way just talkin to you on the phone. they are very good.