Hello,<BR>I have an older Streamlight aluminum body 4 "D" cell flashlight. I bought this back in the '80s. I've seen some posts that this is possibly called the Excaliber or Kel Light, it does have a KA serial number prefix. Since technology has come quite a ways I was looking into upgrading to an LED. I wonder if it is even worth upgrading based on the Malkoff conversion for the Surefire is about $70. Can anyone steer me in the direction for a incandescent to LED conversion for this flashlight?