stepside filler neck

[mspring199]

Hey everyone, I have a 1985 Chevy k10 stepside and the guy who owned it before me was a total hack so I'm in the process of fixing just about everything on the truck. The filler neck for the gas tank doesn't seem correct, it sits down low in the fender and when I went to install a new filler neck housing (plastic piece that holds the neck in place to the fender) it didn't fit right. I've looked through a bunch of websites and can"t find a new neck for stepsides, they're all made for fleet sides. Has anyone had luck finding stepside filler necks other than getting really lucky at a junk yard? Thanks for any help you can give me!