1973 360 upgrades

No verify that the fluid is right up once u get it warmed up good. Kim
The tranny has a aftermarket deep pan on it. I just checked the fluid- warmed up and in neutral running. It’s low. Really low. It’s a stock dipstick should I just go ahead and add some fluid to this? I’m assuming the deep pan doesn’t effect the reading? So it’s low. I will try to get it up in the safe range and see if there is a difference in the way the tranny shifts