Bundt Cake Pan – Best Price!

I normally make my cheesecakes in two 9" springform pans. I butter up the insides of the pans liberally so the cake separates from the pan easily. My crust is basically a liberal amount of butter and crushed Famous Amos cookies. I bake the two cakes at the same time for 3 hours at 200 degrees.

What adjustments should I make if I want to bake one cake in a 13×9x2 glass cake pan?

My springform pan is just the size I need for the birthday cake I want to make, however I am not certain if you can put regular cake mix in a springform pan without it running out the bottom. I have never used a springform cake pan before, but I do know they are typically used for cheesecakes and the like. So, if I put a boxed cake mix in the springform pan, will it turn out as if I used a regular pan? Or should I just make do with my other cake pans and improvise to get what I need, so I spare myself a potential mess from the springform pan? Thanks for your advice!