Notice they talk about you need to shorten your intermediate steering shaft after the box changeout. Yeah, it looks like they have come up with a new big-bore super box that is a Saginaw design and "fixes" the weak Mercedes design. Also looks like if you don't run a super pump with the replacement box, you need a hose adapter kit. I would recommend the pump and power steering fluid plate cooler too while you're at it. Cheap insurance. It's oversized and if you buy the box tapped for the rock ram option, you can go hydro assist in the future, just leave the ports capped off until you install a heavy duty axle or steering that is up to the task of the hydraulic assist rock ram add-on.
Not too terribly much more expensive than the earlier boxes tho, considering it's a custom housing and what that saves you on labor to D.I.Y. the frame mount for it........
It's like Chromolly or RCV axle shafts. You get to a certain level of wheeling with a certain size tire, all this stuff is required unless you want to constantly perform repair maintenance on these various components and risk more broken parts.
