air tools will be very helpful, but it can be done without.
An empty tank is a LOT lighter than a stock one
Jack up the rear of the car as high as you possibly can, you will need every inch. Support the body with jackstands, support the pumpkin with the floor jack.
Disconnect the shocks, and remove the bolt that holds the brake flex line to the body so you have some extra play there.
remove the exhaust, may have to cut it off depending on how old it is.
remove the panhard and upper panhard brace
lower the axle as low as it will go, keep an eye on the brake lines and parking brake cables.
remove the plastic liner around the gas cap, remove the plastic splash guard behind the wheel in the driverside wheel well
Disconnect the wiring harness for the tank, its just above the diff, mounted to the metal behind the rear seat.
disconnect the fuel lines, the lines may have pressure in them, so have a drip pan and sopme rags handy.
unbolt the tank straps, an extra set of hand will be a good idea here, one guy hold the tank, the other unbolt it.
Remove the tank, its a tight fit, you will have to twist it around a bit to wiggle it out of there, watch you dont break the filler neck off. This is the step you will see how important it is to have the car as high as possible and the axle lowered as much as possible.
It should be out at this point, the sender/line assembly is held in with a locking ring, use a screwdriver and hammer to take it off, it spins.
I think thats about it. Expect to spend the good part of the day on the project is you have never done it before, take your time and be aware of what happening when lowering/raising parts. You dont want to break a brake line or something, or forget to detach the fuel lines.
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