Morris,
Are you just going for the fastest time? Then race slicks are the way to go aren't they? The VSCDA and SVRA clubs that run the vintage events around you and I require a treaded tire with a DOT marking. That particular Hoosier is a race tire that has the DOT mark with a full tread so all the Vets, Cobras, Mustangs and Cameros use it.
www.vscda.org/tech.html