Welcome to TRS
Nice looking Ranger, not RED, but never the less a nice looking Ranger
You won't find replacement tanks, Ford started using plastic tanks in the early 1990's and no one makes replacements for these
BUT..............they can be easily repair with "plastic welding", yes its a thing, lol, and its how these tanks are made, the 2 halves are plastic weld together during assembly
Wrecking yard tanks are usually damaged by the fork lifts they use to move vehicles around, or bottom of tank is drilled out to drain fuel before its put out into the yard, environmental thing
That's the bad news
The good news is, its probably NOT the gas tank that's leaking, its the Filler/vent hose that's cracked and leaking, especially if you notice it after or during fill ups
You have a Stepside, Ford calls it a Flare side, so your filler/vent setup is different than "regular flat side" bed truck
So replacement needs to be for Stepside/flare side
Have a look under the truck on that side and feel around with your hand for breaks or gasoline on the outside of the filler and vent tubes
Easiest way to replace filler/vent or find a gasoline leak will be to pull back, or tilt up, the bed to get full access to the top of the gas tank
There are 6 torx 55 bolts holding down the bed, and 3 screws on filler(gas cap)
There is also the tail light wiring harness that needs to be unplugged if you are moving the bed back or off
But you can tilt the bed up and brace it to get access
If you have a lift and transmission jack then Dropping the tank is also an option, but I don't recommend this as a driveway/garage repair method, because its very very hard to get wiring and hoses back into place and then lining up the straps to re-install
Things to look at if bed is up, rear leaf spring hangers rust out on ALL pickup trucks, so on Rangers as well, these are much easier to change if bed is off
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