Here is a possible 25mpg 235; 12 port cross flow head with electronic port injectors and tuned individual stack at each intake. Tri-Y headers with equal length tubes and anti reversion flanges. Computer controlled igniton and air/fuel with knock and O2 sensor, 500 gram pistons/pins with weight shaved from the crank to compensate, roller cam with hollow lifters and needle bearing rockers, coolant into block at each freeze plug hole and exit at both the front and center of head, high pressure radiator and cap running at 230 degrees, synthetic lube all around and tall narrow radial tires running 40-45 psi. Now, get rid of those wipers, door handles, antenna, and loover the tailgate and it's ready for an economy run.
