Plastic fuel tank in 91?

My gas tank is beyond repair and I need to replace it. Best solution I can think of to avoid the rusting issue in the old metal tank is to replace it with a new plastic one or pull one from the jy if I can find one.
Are the newer year's tanks interchangeable with my current 20gal option? If so, what years should I look for? If I go new, I'd like to get one with the pump already installed so I can pull my current pump and use it as a spare.

91' XJ Sport, 4wd, AW4, 20 gal fuel tank option.

Not 100% but pretty sure it won't fit without significant mods to the body

Digger87xj said:

Not 100% but pretty sure it won't fit without significant mods to the body

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Blast, I was hoping they used the same shape and just molded the plastic. Plan B was to pull a tank that is clean, prep it and paint it in the hopes it won't rust out again.

Later was returnless fuel system. You could do it but would require a lot of work. You can buy a new tank for $120. They re cheap.

From what I have gathered you could probably mount the tank without too much trouble. Might need new filler neck lines, but beyond that I don't think are actually any physical space challenges. Problems come in with the lack of a return line and the differences in fuel gauge. My '96 avoids the return line issue (1 year only), but I am not aware of anyone who has resolved the gauge issue.

You do need both hoses and the filler neck from the newer tank's jeep. My 96 harness plugged into the 97+ harness, but I had to move pins around on the 97+ fuel pump tail to get the gauge to remotely work. My gauge goes from registering 1/4 tank at full to -1/4 below the empty line, so not much resolution. Maybe I'll measure the fuel gauge sender resistance at full and empty from both pumps and see what resistance I need to add in series or subtract in parallel.

I installed the gas tank Grand Cherokee ZJ with the sensor and pump.
Bolt on.