$352 for rear quart window seals!!! To "Re-Rubber" a Pinto probably cost 70% to 100% of the cars value! Sometimes you can get rubber and felts from other cars that are adaptable.
The rubber on my Studebaker doors were completely dry rotted. However, I found that the 1st Gen. Mazda MPV door seals could be cut to fit rather decently. Best part was before You Pull Parts closed they were charging $3.00 each for the seals. The big problem with the Pinto is that the doors are so darn long even if you found something to work shape wise, it probably wouldn't have enough length.