Hard to get any rod much under 1700 or 1800 lbs. California used to have (maybe still does) a 1500 lb law, that if your car weighed under 1500 you needed no fenders. Lots of guys attempted to get their hot rods that light to meet the law, but the ones that usually made it sported engines like aluminum 215 CI Buicks and various 4 cylinder power plants.

You figure, a sbc goes at about 550, turbo 350 is another 125 (maybe) add wheels tires, frame, body, steering, seats, gas tank,rear axle, front end, springs, etc. and you are right up there. My '27 weighs right at 2000 with a 302 Ford and stick setup, and that is a really stripped down car.

Don