Corolla all trac wagon fuel tank

So my new to me 91 corolla wagon all trac has a RUSTY fuel tank, and I want a new one, preferably oe but not at450$. So if anyone knows where I can find aftermarket or cheaper good used for sale, please let me know because I really don't want to repair this ugly mother, nor do I want a cylinder tank taking up what little space this thing offers. Any suggestions, sales, or repudation of my ignorance are greatly appreciated! Thanks