Can anyone tell me the easiest ways to get energy crystals, pulse ammo, and Dragon fangs?

I'm on disc 3, just after getting the Ragnarok, I've just gotten Bahamut, and I'm about to do the Research Centre and Ultima Weapon. However I want to at least get the Lionheart (and maybe even the rest of the ultimate weapons) before doing so. I keep fighting level 100 Ruby Dragons on the Island Closest to Hell, but all they drop are those blasted fury fragments and inferno fangs.

As well, where's the best place to find wendigos, or another way of getting steel pipes?

I want to get all this without levelling up, as well.

To summarize what I'm looking for:

Energy Crystals
Dragon Fangs
Steel Pipes

Please and thankyou.