I'd be interested in this as well. I have a supercharged 340 with Carters. My new N/SS ride will have Eddy 750s. I was going to go 15-1. But if I could run it on E85 I could back down to 14-1 and be good to go. The price of C-14 could pay for the conversion. I'm not sure a Carter/Eddy has big enough internal passages or bowl capacity to to provide the approx 50% more fuel required.
Doug