Jerry, they are full tang knives, and certainly it would be possible to enhance the skull crusher. What is already there is something you wouldn't like cracking your noggin though. To make an extended skull crusher, and maintain the present balance would be difficult but doable I think. I'd just need to drill a WHOLE LOT of holes.

I should have mentioned that these were all done with 3/16" 154CM. Magic by Bos...