This is my first post here, but I've been lurking for a while.
Question: Is is possible to replace the fuel tank in a CTS-V wagon with a higher capacity tank?
I would think that with the way cars are designed this is not likely, but I am not sure. Of course in a 556-hp car, I don't care about gas mileage, but a larger tank would mean fewer visits to the gas station.
Anyone know if this is possible/has been done?