Hard to believe only 1 station in town doesn't have an ethanol mix. Maybe they just don't have their stickers on the pumps yet. Especially if all the other Exxons in town DO have the sticker. I don't think 1 station in town gets a "special blend" to sell.
Can you use 87. yes. But why. May as well get some Sears Roadhandlers and cheap ass brake pads too. Might as well not use a full synthetic oil like Mobil 1 too. Hopefully you note the heavy sarcasm. Do what's right. Treat the car like it should be or sell it. No point ruining another Porsche