Hey Tim,
I did see the R30S4s on clearance, but unfortunately I struck out on the needed size. It seems that's the high hurdle with the GT40 combo is finding the needed sizes.
Here is the link to the historic and sports car tires:
https://www.hoosiertire.com/rrtire.htm
If you look at the two part numbers I ordered, (by clicking in on the tread pattern letter) in this case the "I"s, the photos shown have historic large white lettering on both sizes.
From the photo (tread/side wall appearance) and my discussion with Hoosier, I felt this was an "appropriate" tire to use for that vintage look. It's quite a shame, so close.....but they had a lug nut come loose just shy of the finish line. [img]/ubbthreads/images/graemlins/loser1.gif[/img]