Thanks for all the suggestions. I will look for the vanilla wafers or the digestives.
The recipe is two paks. of vanilla pudding made as directions less 1/2 cup milk, after pudding is set (3min.) fold in a carton of cool whip. Using 9x13 buttered pan layer graham crackers, half of pudding mixture, another layer of crackers, rest of pudding mixture, another layer of crackers. I melt a can of choc. icing (too lazy to make my own), let icing cool a few minutes and carefully pour over top layer of crakers. Make day before. Sinfully good.