low fat pineapple/strawberry cake (wonderful)

Odd question- anyway to sub the pineapple for something else? I like the idea of this cake, but I don't like pineapple.

I made this over the week-end - only I didn't frost the entire thing with the cool whip, we just scooped some on top.

I cut my 9x13 cake into 18 squares, and with my boxed cake mix and pineapple brands here are the nutrition details per square:

Calories: 29
Carbs: 7
Fat: 0
Protein: 0
Sodium: 23

It was no nice and light...a perfect summer dessert. This will become a staple in my cooking rotation for sure!