I am looking to switch my PCA class to GTD3 from GTB1. I does Frisby Tire provide a tire contingency program for GTD3? It used to be a nice perk for my GTB1 efforts.

The GTB3 contingency program is the same as in GTB1. You need at least one other car in class to earn a contingency and there aren't many folks in GTB3 these days.

Edit: just re-read your post.

The GTD3 contingency program is different. Rather than tires you get gift certificates valued at less that the GTB contingency. However, you can run the Clubsport Series in a GTD3 which has Pirelli sponsorship. Get in touch with Lynn Friedman at Clubsport at pcaclubracing dot org for details.