I built this one myself; as far as I know, shocktroop is right; Powerlyte isn't making them anymore. I've only seen a couple E2'd Hybrids, and a few Race'd Hybrids online. Never seen one at a field, they're pretty rare on the East Coast, AFAIK.
If you are building one, feel free to ask me for pointers. If you'd like to buy this one, PM me.