I have a 76 antennae ball for each car, and a replacement just in case. Up until a few years ago you could still get them at some union stations.

Dingo balls in the lowriders, Fuzzy Dice, graduation tassels, & various items hanging from the rear view...

Jenson Coaxial Speakers, Krako, Blaupunkt, Pioneer Supertuner cassette decks, and 7 band equalizers or power boosters... House speaker in the back seat...

Spinner center caps on your Craiger SS wheels... Fat BFG Radial TA's if you could afford them requiring Air Shocks in the back...

K-40 CB antennae with a loud speaker under the hood... Aaoogha horns or Dukes of Hazzard horns...

Cherry Bomb - Thrush - or the least expensive Turbo mufflers... Chrome tips that had a set screw to hold them on...

Anodized valve covers and air cleaner lids, or all chrome...

Chrome Traction bars...

American Flag stickers, STP, any go fast part usually had stickers (Hooker, Headman, Holley, Offenhouser, Moon Eyes)

As Bjorn said the Chrome Headlight eyebrows, Door guard trim, pinstripe tape, raised white letters in the tires, tuck & Roll interior, or that shag carpet... to match that bright multi stripped 70's paint jobs...

I'd have to say, for the most part, still all just a throwback to the origin of hot rodding, old school. You do what you can do, and you do it with what you have to make it your own... in your own way. Pretty much what were all still doing one way or another...

Kool topic Robert.

Brett!