What about checking at Beverly Airport? They should be able to supply what you need in the way of avgas but it might be pricey. Here in Tecumseh we not only have three airports albeit small ones we also have a station that sells race gas but it is VERY pricey(last I heard about $7 a gallon).E85 stations while not on every corner are pretty much available and last week I went by one that was selling it for $3.16 per gallon. One guy I know has a 41 Willys that is running a slightly detuned 525 cu.in. Donovan and it runs fine on 94 octane even with the BDS blower.