My friend is selling a used supercharger and it's off his 2003 gt its called the 1000RR by paxton.I have a few questions about it, first of all will this even fit my 2000 gt? Also how much would you say a performance auto shop would charge to install this? Since this is used, can I just put the chip right into mine or do I have to get it tuned? I need a lil info thanks guys.