As you said just about anyone who runs pump gas runs a small amount of ethanol. Normally 10-20% depending on who produces the fuel.

I have had some experiment with up to e45 mixed with e85 and 89 octane to achieve the 45% requirement. This can be run without much modification and usually just requires a jet size increase and a small air bleed change.

One thing I didnt note in my post above are some common questions that everyone asks about with e85.

Spark Plug heat range - Normally 1 step hotter than on gas or same as gas. I like the NGK 56712A-7 plugs for all setups I have done so far.

Timing - Normally same as on gas. I run mine through timing intervals of 1-2* at a time until performance levels off then step back to last setting before performance level off.

Thanks for reading.