Gas Tank Leak!

I was under my truck looking for the fuel pump, and while feeling around the top of my gas tank I believe I cracked one of the rusty metal tubes, or rubber lines that exits the tank. When I start the truck gas drips from the top of the tank. I'm going to remove the tank at some point, but I'm not looking forword to doing it. I guess I will need to replace the fuel lines exiting the tank. If the metal tubes are cracked what can I do? I've looked at replacement gas tanks, and they cost more than my truck.

I've just been looking at some other websites and it looks like I will need a new fuel sender unit. Are these expensive, and can I find one for this old gas tank?

1986 Dodge Ram 250
5.2L V8

Did some more inspecting and found a rusted pipe coming out of the gas tank, that snapped.

http://www3.telus.net/immortal/gasline.jpg

What am I going to do with that?! I'm dropping the tank tomorrow to get a closer look. I know I'll need new hoses, but that broked pipe is going to be a pain in the ass.