11:1 compression ratio fuel?

Hey guys ive got a 440 in my 71 demon. According to the little sheet i have the compression ratio is 11:1. I don't really know that for a fact because i havent actually done the measurements and stuff but what i am curious about is what type of fuel should i run? I have read people being able to run 93 octane but i know its right on the edge. What type of fuel should i run?