5.7 liter gas tank

[slredstorm62]

so just my luck, i got my truck running but i only get about 200 miles if that to a full tank of gas. reason being: i would suspect the gas that drips of the bottom of the tank when the trucks sitting. it doesnt just drip slow, its a constant drip probably every second or two. i was wondering how i go about removing the gas tank and replacing it with a new one. should i run all new fuel lines to the throttle body to?

[slredstorm62]

ok so i found out that at just above half tank if the trucks sitting level it wont leak. but as soon as i get at an angle it leaks out.