Here's something you should be interested in.
Found Long's original book, which looks to have fallen in between copyright cracks. It was posted on the web, and I was able to make quickly into an improved format. Of course, it's a free download. And you're welcome.
This really tells his original research into Huna and the capabilities he found there. It also mentions briefly the relationship Huna has with older religions. The rest of Long's books are available at Huna Associates.
But this one book definately tells how there seems to be an underlying system behind all these older religions and belief-systems. With my studies of the similarities between newer studies such as Silva and Quantum Physics, we seem to be going full circle into a common, underlying system of thought which enables unlimited abilities.