the corvette is a y-body, and the definition of frame vs unibody can sorta get tricky depending on personal opinions... in a 97+ vette(at least to '04) you can lift the body off the rolling "chassis" The torque tube setup is actually like a back bone for the drivetrain. all the parts motor trans rear suspension are worked together in a such a way that they all support each other. but techincally its a unibody though, lol. 82 and older were full frame cars.
