Fuel rail, 740cc Injectors, and a adjustable fuel pressure regulator, you should be able to fill up with e85, you may have to adjust the fuel pressure a little bit to compensate am I correct on this? You wouldn't be able to take the full advantages of e85 because I know that the advantages of e85 is you can run more boost and timing but you could still gain a little bit just by switching the fuels. I did read some posts where guys where mixing blends and just having the o2 sensors target stoich. Just didn't know if anyone was doing this