How much did the E85 hurt your gas mileage? I have Regal top swapped, VS cam, exhaust, intake running a 3.5 pulley. It was dyno tuned at 270hp and 330ft-lbs. I have access to E85 around Atlanta here, one station is actually just a block from my work, but I am already only getting about 20-22mpg commuting city roads.
I only lost a few MPGs; however, the performance increase is so worth it!