Thanks for the advice. Simple, I suppose, but I was sort of scratching my head (not knowing that the tank and neck were two pieces). Fortunately, the filler neck was easy to get off and easy to figure out how to remove. Inside my filler neck was a funnel-shaped spring that was held in place by friction. It was a bout 8 inches long and obviously is an anti-siphoning device. I'm assuming that this wasn't stock.
Since it's not a daily driver, I yanked it out so that I'd have easier access to siphoning my tank, should I ever need to again.
The tricky part is getting all the gas out. Went from 3/4 to 1/4 tank pretty easily. Can't seem to get a pull on that last 1/4 tank. Will try jacking up the front end to create more of a pool.