408 stroker fuel requirement?

I don't have access to 93 here. 91 with 10% ethanol is the highest available with one exception. There is a place that specializes in selling gas and oil to some gas stations and large businesses. They have ethanol free 93 for about $2.50 per gallon more than regular 91 pump gas. My car runs fine on the 91 pump gas. It is a stock compression 340 built to about 375 HP. I see no reason why you can't run yours on pump gas.