After three years of the same exterior design wrapped around body-on-frame construction, the 300F of 1960 brought major change to the series as the first “letter car” built with a unibody design.

Passengers were treated to an interior with four individual, leather-covered, contoured bucket seats—also a first for the letter series.

The front chairs swiveled to aid ingress and egress.

A full-length center console running from the front to the rear of the cabin included armrests, storage compartments, power window controls, an ashtray, and a large tachometer.

The futuristic AstraDome instrument panel featured an array of Space Age switchgear and a 150-mph speedometer illuminated by innovative Panelescent Light, a soft green glow designed to create less glare and thus be easier on the eyes.

Under the 300F’s hood was a 413-cubic-inch Golden Lion V-8 engine fed by Chrysler’s all-new, NASCAR-inspired Ram-Tuned Induction system that positioned a pair of Carter four-barrel carburetors 30 i...