i got in the back and couldnt unhook the fuel line from the sending unit!!
That's because it doesn't disconnect there!
Neither the hose fitting, nor the "fitting" on the end of the pipe spin. Neither end of the hose spins like a garden hose. You have to get under the car and disconnect the other end of the hose from the hard line just forward of the tank. Once you do that then you can pull the pump assembly, hose and all, out of the tank and put it on a bench were you can get some support on the pipe and turn the hose off the fitting.
Keep in mind that only the small nut on the hard line spins. You need to hold the hose end still with a wrench and spin the hard line nut off. Use a flare nut wrench or you'll destroy the nut. You'll also want to spray down the nut with PB, that bastard's on there tight and years of road crap make it even tougher to get off.
While you have the hose off you might want to find a place that makes hydraulic hoses and ask them to re-build it. They won't have the fittings but with a little coaxing they can cut off the barrel crimps and replace the 20 year old rubber using new crimps and the old fittings.