Hi Starting to think about doing some mods to my 2007 V8 GXL Diesel Cruiser First up getting another performance chip, dont know to much about the practical benefits other than increased torque but as we do alot of miles living in Pilbara W.A I was more after fuel economy. Other thing was getting dual rear tyre carriers to make more room for extra fuel tank. Looked at Kaymar, ARB and Opposite lock. Any feedback would be appreciated