Quoting Matt Hopkins <mhoppy@xxxxxxxxxxx>: > 18 MPG, Tell us more. Is the engine just tuned really well or did you > make > modifications? Did the 73 use regular gas. I am thinking the 75 was > first > year for catalytic converter > Also, how is the odometer calibration. I think the 73 had the lower 3.23 rear gear, making the 18 mpg less likely. D^2, 2 68s, both gas guzzlers!