I have a Mantec "metal Jobbie" and the Nugget air box kit. Works like the box says and I've run in to a fair bit of branches etc without damage. I haven't waded deep enough to need a snorkel cause A)there's no water here and i'm soft when it comes to water crossings.

Also got a terriferma A -winch bar (no winch) and a rijidig dual wheel/jerry carrier. all good stuff! That's about all i've done to mine apart from a light and removing 1 rear seat.