Skip, I am assuming you have the 100 gallon tank, if so you will be fine at the 3/4 mark. I have the 100 Gallon on my '05 an have swapped it 3 time, the last time I did it myself, just crank the wheels all the way to the stop and you can reach in from the street side.
Dave, Bobbi and Fenway
2005 38' FDTS Alpine Limited, 2016 Jeep Grand Cherokee Limited
Lake Wales, FL