What about the new gas?

Fellow bussers:

What about the new gas? I'm a little worried because I don't know how
old iron mixes with the new gas.

I've been buying regular gas without alcohol for my '67 bus with a
super beetle engine ('67 carb). I wonder if someone will comment on
how it will run on the newly mandated gasohol? Will I have to make any
modifications - carb, plugs, timing?

Should I maybe think about replacing the engine with one (single port,
stock) that has been specially built for gas with alcohol for
Washington State, not California?

Thanks.

And...

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