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.
'91 Toyota Pickup
'09 Kawasaki KLR650
'12 Gunnar Rockhound 29
"To live is to suffer, to survive is to find some meaning in the suffering." -- Friedrich Nietzsche