So IPOR is the second one and the prototype Slee is the top photo?
What twist are you thinking about, Bill? The drive line twisting the cross member? Slee's looks like a Budbuilt on steroids and IPOR's looks like it's a 1/2" thick hunk of iron.
"Stand your ground. Don't fire unless fired upon, but if they mean to have a war, let it begin here." -- Capt. John Parker