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Why all the Factory Markings?

Recently we had a question from Team Member Dave Miller regarding a “457” factory marking he found under the rear bumper of his Cale Yarborough Spoiler II. This is a common question that has been asked before. It is obviously a strange location and marking. The marking is never the same from one car to the next! What is it?

We have previously answered this question and have received several comments. When you read one of our Posts always scroll to the bottom of the page to read what has been added in the Comments by our Team Members. Often times that is where the really good information is. Thank you to Dave Miller for asking the question and reminding me that some of our older Posts need to be published again to bring that back up for newer readers. Below is a link to the original article and comments.

Does your Cyclone or Spoiler/Spoiler II have marking similar to this? This marking is located just to the right of the driver’s side rear bumper mounting holes in the photos at the top of this page. However, you might find yours anywhere along this rear panel, see the article below.


Some of my first and strongest memories from my childhood relate to cars. I still remember when things happened based on what car I was driving at the time. I grew up and lived in Iowa for nearly 40 years before moving to Southern California and now live in Tennessee. I was a Corvette fanatic for years but then re-discovered vintage American Muscle. My wife, Katrina, and I decided we wanted to focus on unique and rare muscle cars. After a lot of research we fell in love with the Ford Blue Oval Aero Cars. These were only built in 1969 and and aerodynamics became an important part of winning races. The only purpose of these limited production cars was to win NASCAR races using the Boss 429 and 427 power plants complimented with a special, wind cheating, aerodynamic body. The Ford Talladega and Mercury Cyclone Spoiler II are terrific and historic cars. This site is devoted to these car and their owners past and present. We provide an Online Registry for recording the long term history and ownership of every remaining Talladega, Spoiler and Spoiler II.

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  1. My Talladega, VIN 201121, has the rotation number, 624, on the right front side of the radiator support, on the rear axle center housing, and in red marker on the back side of the door data plate. I really like all the details.

    Thanks, Elmer Thornton

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