The answer is no

Research Nissan engines, and you'll understand why

The new 05 Xterra has a VQ40 engine, which (from my understand) is relatively the same as the 350Z engine (VQ35). So, in time you will most probably have the possibility of having a supercharger for the new 05 Xterra, but it won't be from the VG33E (00-04 Xterra) engine.