I think I would opt for hydraulic bump stops over the air which apparently fade during high speed dirt use but really don't have any experience with either. The links in the rear would need to be replaced with some beef. Skids for sure, sliders too. Trans cooler. Beefy tie rods. Braided brake lines.
I am sure they require a roll cage of some sort? The VX has low head room already... so exo?