Don't even waste time with the injectors, up until 2005 or so the fuel filter is usually under the drivers side door, unhook it and get the gas there. Or most newer ones ~2000 and up have a valve on the fuel line leading to the injectors, its a standard shrader (SP?) valve like tires so a length of fuel line and a screw on pump end works.
You have to figure a way to run the fuel pump manually, either through the prime terminal or wiring the relay and the fuel pump in a car is a high pressure low volume so it is slow to move fuel, figure hours to empty a full tank.
Really new stuff the engine computer controls the fuel pump via PWM so there is no external tank and relay so now you would have to find the wiring going to the pump.
If it gets that bad I'm looking for high ground clearance vehicles and unbolting the tank straps and taking the whole tank for fuel storage as well