That's what they are...I have these on my car as well. I did the work myself so I was able to compare them to the originals. I needed to install them when I put on the Baer Track 13" brakes with my 17" FSVT wheels and spacers. They looked exactly the same but longer...same lug nuts, same knurl/spline, same thread just longer and the head/shoulder was about 0.050" bigger in diameter.
Not sure what you are after, if it's all the same and works fine why worry about it

Scott 2000 Contour SVT #1464 Mustang Dyno: 171.6hp/145.3lb Dynojet Dyno: 171.1hp/148.9lb 1989 20th Anniversary Turbo T/A "Indy 500 Pace Car" #1376 of 1550 All Original, 46k with a few mods 2002 F150 SuperCrew