Sweet, you listened to me in the other post. I heard the newer ones are a little more difficult, but if you climb under it there should be some indication.
On the front there may be a six inch hose that kinda has a pig tail curl at the end to form a pocket.
the tranny has a tube pointing down on mine,
Transefer case has a tube upward, I moved it a bit higher, and the rear axle should have a tube going up, I moved mine up a bit higher, I have heard some taking this up to the fuel door and drilling a hole, prob not necessary, Since you are snorkeling, I suggest taking all four up to the hood, even up the snorkel, On mine I took them high enough to get over the doors, so another word, If I take water on, I will have a smelly truck, a fried amp, a pissed driver, and also a lot of fluids to change, but better than it was.