These motors are direct injected so usually it's not as simple as e85, fuel rail and injectors. To do full e85 and not a blend like e30 you will need to replace the high pressure fuel pump (~$1500) to support the flow, and the injectors (~$1000) I
doubt anyone will make a fuel rail for these...
The 2.3 blocks use an open deck design, where as the 2.0 is closed and favored for higher hp applications. I did a big turbo 2.3 and spit a rod out the side so I did a bunch of research to try to make more power reliably.
I would love to see an ST or RS option but probably won't happen :(