Hi everyone. I have a 1981 gl wagon 4wd that had been sitting in a barn for 30 years with gas in it. The tank is super rusty so I am working on replacing. I pulled a tank from an 83 gl wagon 4wd and it's too long. I've heard conflicting info that I can only use a tank from an 81, also heard that there were different sizes from 80-84. I'm now doing a nationwide search for one and want to make sure it's going to be the right size before I pay for it. Any help would be greatly appreciated. 

81 4wds (except brats)have a unique part # according to my info (7421 41220)

Not sure if anything else fits.

Thank you. That is the part number I got from Subaru as well. No one makes them. So this means that I can only get one from an 81 4wd wagon correct?

According to my info,that part # only applies to 1981 non-brat 4wds.

Hatch,Sedan,or wagon are  the same part if 4wd.