Southern Caramel Cake

INGREDIENTS:
Cake
2 cups plus 2 tablespoons sifted all-purpose flour, plus flour for dusting cake pans
? tsp salt
2 cups sugar
2 sticks unsalted butter
1 cup water
1 tsp soda
½ cup buttermilk
2 eggs
1 tsp vanilla
Frosting:
3 cups granulated sugar
1 stick butter
1 cup heavy cream
Dash of salt
2 teaspoons vanilla