Loading ...The SR 71 Blackbird, they can’t duplicate it these days, no computers back then either. Similar thing with the Boeing 747. General Motors got 375 HP out of a 350 Cubic inch motor. Wages were high, living standards were great even for blue collar.
High school kids my brother and his friend both bought brand new 1970 “six pack” Hemi Cudas, worth a fortune today. You could order a car any way you wanted. From stripped down to full option. Huge selection of engines. The designs were simple easy to maintain and cheap to fix.