[toopsss]

Op clarified it was a Cessna 421, so indeed pressurized. When these are ferried they put fuel tanks inside the cabin (these are called ferry tanks unsurprisingly), so they were indeed within arms reach.

[bogomipz]

Yeah I didn't see his edit until after I posted that. I've actually been on one these as part of a commercial "island hopper" flight. Cheers.