This is one of those projects I had many options to go with ... just had to come up with the best one. I fabricated aluminum foot mounts to use the JAG bottom plate that normally connects to the aluminum ankle. Since I didn't have an aluminum ankle, I improvised and came up with a rock solid design for the center ankle/foot.
The hardest part was cutting the square out of the JAG plate as it was pretty heavy steel. I busted a few scroll saw blades on that but it was worth it. It's always a good feeling when you fabricate a part. Even though this project uses mainly parts that I bought I enjoy fabricating parts.