With the engine crossbar gone, the frame will spread open unless you add a cross brace. I'd add one for the steering box as well so you don't crack the frame.
These front blocks look scary to me!
For lifted rigs, this is the best way to set up steering.
I'd also go with a full size Jeep (Grand Wagoneer) front diff (D44 driver's side drop) or YJ with high steer knuckles and get the tierods above the leaf springs.