If it's a white car with red trim, it was for sale a while back; I don't recall if any proof surfaced that it was the Tullius car or a real D/Dart. In that era, it would've run A Sedan, along with Barracudas, Mustangs & such; that was the predecessor of TransAm.
Unless I'm mistaken, the D/Dart program was drag-oriented, for an NHRA Stock class, not that it would preclude one from being adapted for use on road courses.
Go back to 60-61, and you'll find where Chrysler used Slant 6 Valiants at the Daytona sports-car race.

In '66 there was also the Grable/Gupton, Yares/Krueger, Keck/Krueger Darts. The factory didn't support any teams in '67, so everyone but Tulius pulled out. Tulius kept the '66 Darts kept on running as long as they could but didn't show for '68.

Tulias went on to run a '64 Tempest in the '71 Trans Am series.

The Group 44 cars were all white. Add Tony A2Z amongst the drivers for Tulius in '66.
http://www.a2zracer.com/page9.html
The red and white Ferris Miles car is a D/Dart that was setup to run A Sedan in SCCA. It's listed on the D/Dart registry website. I'm not sure if it ran any Trans-Am series. The current owner drives it in vintage racing events.
http://www.seriousviewers.com/D-Dart/ddart.htm
With the SCCA's archives seeming to finally get a permanent home with professional archivists, it may be possible to get more info about the driver and races entered in the '60s and 70s.