Exterior styles in U.S. autos are as changeable as women’s hats. For ’63. they are simpler and handsomer than ever (see U.S. BUSINESS). But mechanically, U.S. cars are conservative; under their hoods ...

Engine components produced during the '70s smog-era were oftentimes aimed at reducing emissions and typically had an adverse affect on performance, lending to their negative hobbyist perception. That ...