1928 Tudor sedan. How important is this vertical brace, goes from a horizontal brace under the rear window to the floor? I would like to fit a fuel tank back there and still have a rear seat. If I removed that brace and tucked the tank under the horizontal one, that would probably get me at least 2" more room. The tank is 7" wide, and I have stock front seats, but they have been moved back about 6". Rapidly running out of real estate back there. That vertical piece looks like it would come out easy enough after drilling a few rivets out, but want to make sure that won't cause me problems later on.