Looking for a used supercharger

[MistaCaper]

Looking for a used Ls2 supercharger for my 05 GTO since my FBO Cam setup is just not good enough Any more, Any help on locating a affordable good condition supercharger would be greatly appreciated, the price of a new one is far out my budget.. a LSA setup from boostdistrict is around 3900$ and I only want to spend 3k$. Like I said any help would be greatly appreciated!