Oil preheater in aluminum trans pan

I have used the Moroso stick on heaters on the bottom of deep steel pans before. Trying to keep the car more consistant. I noticed the car would pick up, especially when hot lapping after going rounds. My thought was the increased trans temp. Do you have a temp gauge for the trans ? That is where I would start.
Yes I have a trans temp and will be adding an engine oil temp as well. I do not think a stick on heater will stick to cast aluminum
So I am considering the immersion heater.