I installed one in my 06, very staight forward instal slight mod to the fill hose needed on mine and also had to retighten the big nut holding down the lift pump that comes with the tank (i have a spare now). It is actually closer to 65 gal says jacob at aero tanks, spare tire drops 6" looks like chevy. I had to grind a bit on a couple of the brackets/legs of the doughnut tank to fit up proper in the spare tire well. It fills up quik to the fill neck. I will go 1200 miles to a tank full mostlly running empty and still have 2 1/2 to 3 gal left in tank, (i drained the last bit to check how much i had left) it will suck it dry. Overall it's a great tank, i hate fuel stops and the longer i can go without stoping the better.