Get the VICC turbo off a mk3 (3.1 trooper - 96 onwards) rather than the VIAN one off the 2.8 or the early 3.1, it's a higher output and more relaiable turbo.
You may need to rotate the inlet housing 90 degrees (ring of 6mm bolts iirc), which is very easy to do. If your wanting more boost, find a scraped 2.8 frontera, and pull the front mounted intercooler off it. It will fit into a trooper and give a lot more cooling on the air. Also remember to change your on boost fueling to match the change in turbo / intercooler else you'll gain no benefit.