Coachwork continued to be offered by Fisher Body who was the primary supplier of all GM products at this time, and Duco automotive lacquer paint, introduced by DuPont was the first quick drying multi-color line of nitrocellulose lacquers made especially for the automotive industry.

The New V8 was introduced as the "New Ninety Degree Cadillac" making note of engineering improvements while retaining the flathead architecture.

[1] Cadillac also instituted marketing changes for its products to break away from industry established trends every year.

[1] GM had successfully purchased Fisher Body and Fleetwood Metal Body earlier in 1925, and provided the Cadillac customer 15 separate coachwork choices from Fisher on a 140" wheelbase, and a separate 25 individual choices from Fleetwood also on a 140" wheelbase.

A monogram plaque engraved with "V8" first appeared attached to a rod connecting the massive 12" headlights.

Fleetwood bodies featured a "sweep panel" which was a styling flourish that started at the top of the hood next to the radiator and gradually progressed outward towards the cowl then down the sides of the engine covers.

[1] The 1929 Type 341-B continued the tradition of appearance, engineering and equipment available upgrades, introducing a synchromesh transmission, Security-Plate safety glass installed for all windows, and electrically powered windshield wipers.

Fisher Body coachwork selections offered 12 choices, while Fleetwood offered 33 documented selections; the "sweep panel" introduced the previous year was now a standard feature on all Fleetwood products and some vehicles had two-tone paint appearances while others used a single color with the "sweep panel" used.

[1] Luxury, optional equipment, interior and exterior choices and exclusivity had become expected of the order catalog for Cadillac products and the list was refined and expanded.