Sorry thought it was a secret code on the tag
It probably is to some. I just don't have that specific knowledge.
And what they said.
If it's still in good shape, it's probably a good choice for that much lift. The tall box makes the steering angles a bit better from the get-go, even without a dropped pitman arm.
As said, you have a shorter draglink, but we sell one for that specific setup (
http://www.wildhorses4x4.com/product/Adj_Drag_Link_P_S_F100_Kit) if you're still using your stock type tie-rod or one of our adjustable replacements.
The box is stout, easy to find parts for or have rebuilt, less expensive to replace if needed, is quick, without being too quick, and has a good "feel" when steering.
You do have to be careful when choosing a custom radiator (we make one specifically with more clearance in that area) or when installing any new replacement radiator mounts. Or when messing with the body mounts because the body can shift slightly and bring the radiator with it.
Some of those issues are similar to other boxes except for a stock EB box, but they're all surmountable.
About the only other thing I can think of that you should watch for is if the PO didn't mount it using braces welded to the frame. The reinforcing nature of the brackets helps to strengthen the frame in that area.
Paul