Well, I FINALLY got it to work... I ended up taking it straight through the bed. I cut a hole right above the tank filler neck and installed the filler cap I yanked from the junk yard. It actually looks half decent. It's not the most symetrical looking install, as far as cosmetic looks are concerned, but it's functional. I'll try to figure out how to post a picture of it on here for all to see. I'm just lucky that I plan on replacing the wood and fender wells in the bed because I now have two holes. So much for trial and error.....more error on my part. At least I didn't cut a hole in the actual fender. That would've been tragic seeing as how I would've had to tac weld a patch on it. I can't stress enough how much I appreciate all of you're replies on this subject. I'm sure I'll be asking plenty more crazy questions through-out my project......but for now..thanks so much!!!