1. Preheat oven to temperature specified on cake mix.
2. Mix the first five ingredients together to form cake batter.
3. Pour into a prepared 9*13 dish and bake approximately 1 hour (a toothpick inserted will still be slightly moist).
4. While the cake is baking, mix together the lemon juice and powdered sugar (should still be very liquidy, not a paste).
5. When the cake is done, immediately fork several holes in the top of it.
6. Pour the juice mixture onto the cake- make sure to get the edges too.
7. Can be served warm or cooled.