There are Seoul P4 LE's available at the Shoppe. If you are using the A19, it is probably not the best choice but I wanted to drop you a line just in case.
cryhavoc does some very clean work. He sent me a link to his build photos putting a Cree XR-E into a traditional Aleph LE, and it was as perfect a build as I could imagine...and I'm pretty picky. I'm using as a guideline for my own builds.