I have an old 300 6 with a stock one barrel on it. What would it take to get this thing to run off of E-85?Takes

I have a 81 bronco with a rotten body and a rust free F100 standard cab. Wait for it.... I want to put the pickup front clip and cab on the 81 bronco frame. Will this work or should I try to find 80s vintage body? Any ideas? smiliegitrdone