trouble finding replacement stepside fender

[mamato2]

Hi - I have an 83 c10 stepside. I have been working on it for awhile and hope to tie up many of the loose ends when it is off the road for the winter. One of the main things I want to replace is the drivers side bed panel and rear fender (it is currently held on with a bungee cord!). I've been looking on craigs list and e-bay, and also parts dealers like brothers, lmc, american classic truck parts, ... No luck. My gas tank filler hole is on the drivers side and every fender I have found has the hole on the passenger side. Not sure why I am having such trouble finding this fender. Any ideas on where to look? Thank you!!!