Yes, I believe the Goodyear Wingfoots were the predecessor to the Eagle ST's. The ST's were raised white letter, and had an eagle head between the words "Eagle" and "ST". I think those were followed by the GT, then GT+4.
This was Dave Doern's old car, circa 1982, which had a lot of options added that were not on the build sheet. That's our Chicago skyline in the background. This photo was used in dozens of magazines and books when discussing the 1969 Trans Am!
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My Bio: I am currently writing articles for POCI's Smoke Signals magazine and enjoy promoting and discussing the history of the Pontiac Motor Division.