Watergate Cake II

Ingredients

• 2-1/2 cups all-purpose flour
• 1/2 teaspoon salt
• 3 teaspoons baking powder
• 1 (3-ounce) package of pistachio pudding mix
• 1 cup melted butter
• 1-1/2 cups sugar
• 4 eggs
• 1 tablespoon vanilla extract
• 1 cup lemon-lime or grapefruit flavored carbonated soft drink