Supercharger Help!!
 

Hi, I am new here and just recently bought a 2003 GTP. It has a little over 48K miles on it and I think that the supercharger oil needs changing. I am hearing a grinding sound around 1500-2000 rpm and I hope it is just old oil. I am also wondering how to change it. And a final question for anyone, in your opinion what are the best mods for the money. Any info would be great.
Thanks