I have been trying to find Goodyear Eagle ST's or GTII's (with raised white letters) to put on my Z but have been told Goodyear no longer makes them, or any raised white- lettered tire for cars. Neither does Firestone. Kelsey has reproduction Goodyear Steelgards (white-lettered) and I think Goodyear Eagle GT's with outlined white letters. The Goodyear Steelgards very likely came on your '78 Z28 as original tires as they did on my '78 Z28. The only tire I can find as a new radial tire with raised white letters is the Cooper Cobra Radial GT, other than of course the BFG Radial TA's. Hope this helps.
I drive my cars a lot. To work, 10 miles from home, to meetings and on the interstate. I better change these tires out. I have always run BF Goodrich Radial TA's but would like to check out others. I was thinking about Good Year Eagle STs. I had them on my 78 Z28 in high school. Does anyone have any other suggestions? All ears.