Research and more research.

You won't find much if anything on here. You need to explore LS1 tech and hp tuners to read up on how to run e85.

The skinny is just buy injectors, maybe a new pump and then tune the car. Note that it's not easy to just jump in and tune for it on a LS based pcm and you will not get as good mpgs. Running 91+ octane fuel is easier in reality.