It indicates nothing more than that your car is running.
A hot trans tunnel is totally normal and has nothing to do with engine temp, a new hood or no hood will not change this. As stated there are two cats there if you have a stock cat pipe, if you’re running aftermarket you will still have two hot downpipes there. And yes, with lowered cars there is more heat due to less airflow in that area. You could try some heat barrier, it will help some but there’s not much else you can do-exhaust gets hottest at the front.