It's coming along slowly, but picking up speed. The first one is almost done. The other 3 will get finished much faster.
It's going to be a tight fit with an OZ head, but I'm confident that it'll clear. I would suggest a turbo blanket to cover the hot housing because it's going to be within 2-3" of the intake manifold.
All in all it's going well and I think you'll like them!
Will