Get yourself a flip chip from Sct. You will need something to command more fuel once you put in the injectors and pump. You would have to test sizes or find a formula. I would think a set of 24 or 30# injectors would be ok with a walbro 255lph pump(they may make a smaller one). In the even of using regular gas you can flip the chip back so the computer isn't flooding your engine. The tune may be difficult, going to need some one with experience to tune it. I would think for around $800 you should be able to get this done. Cheaper if you get a deal on the injectors. Pumps are cheap at $100, don't bother with used there and don't cheap out on the tune. Now I am not sure about factory rubber components or even the tank, but I really don't think it will be a problem. FYI GM'S new E85 trucks suffer no lose in power or tourqe when compared to using gasoline on the same engine. GL I have been thinking about this myself, but not sure where I can obtan E85 out in the real world. I think its a good idea, if it doesn't work you can pretty much sell the parts off or recycle them for another project.
Talk to the pump and injector manufactures they should be able to give you more insight as well.
