Manda is correct. I have the Terraflex belly up skid. Its not a true flat skid but I think it does a wonderfull job. When I (with warthogs help) fitted it, we did install an SYE at the same time. Not sure you have to have an SYE but as I fitted a 4 inch lift at the same time also, it was always part of my planning to do so.
Over time I found that the engine lift blocks that come with the belly up plate are a good idea to fit, because when your trucks balancing on its nose there is just enough movement availible to let the fan foul the bottom of the radiator cowling. Fitting the engine lift blocks fixed that though. If you have a body lift then you probably already have an engine lift so most likely not needed.
I have to say, probably one of the best mods I have done that has increased the trucks over all performance/ability
Clayt
You can see how much more clearnace it give on this pic