I used to have a 98 Frontera sports. King Springs make a raised spring for the rear and you can reset the torsion bars or get new ones from Tough Dog. Add some new shocks and your done. This will raise the Frontera about 50mm. If you want to go higher talk to CalOffroad about a kit for a MU and if it can fit a Frontera. There are other Lift Kit Manufacturers around in the USA who also make kits. Have fun.