This is what did for my 98 GTX Ltd. First I took pictures, then all I did was disconnect the straps, labeled and pulled the lines. Removed the oil tank first . Then I shimmied the tank forward and removed the gas guage/sending unit. Then slowly worked out the tank from the front. My engine was in so I'm not sure it it will go out the engine compartment. It was a process and a tight fit.
Also DL the maintenance manual for this unit, its free. There may be tips in that too.