e85 is great, I would recommend getting a afr gauge, makes tuning way easy,if you are going over 13-1 compression then you could consider e98 as an option too, you don't have to worry about gas mixtures or what kind of gas they mixed with, plus the higher octane is a plus. and like other people said I wouldn't go with a conversion kit, send the carb off to some one reputable, classic motorsports in sauk centre MN did ours and they work great, he puts them on a dyno motor to get them pretty close on the tune and make sure they work on first fire up, they take a little fine tuning to get perfect that's where the afr gauge comes in handy,