Sunroofs were a factory option on some Foxes, but I'm not sure exactly what years. Mine came with one, but after some dudes broke it out to steal the radio, the prior owner took a piece of Plexiglas and glued it in there with silicone house caulking. So, I eventually wound up replacing that mess with an aftermarket sunroof. I can tell you for a fact that, at least out here in AZ, a sunroof does help with ventilation quite a bit, but it also lets in a lot more light, so your car heats up VERY fast whenever you're sitting still. Maybe throwing some extra-dark tint on the sunroof glass would help...