you dont have to run 110. A lot of ppl run 100LL and are fine - it's usually only a couple of $ higher than premium. I used to run 104 in my 500 and it ran really good. Sunoco started shipping the 104 with ethanol and the gas station i bought it from quit carrying it.
Just dont try to run higher than 110. You'll likely not have the compression required. It will just burn too cool.