If I was given 50k to blow on something other than hookers and coke I would get the CTS-V
I have seen these cars put down good numbers at the LSX Shoot Out events, parts are easy and cheap to find, dealers all over to service it.
So, get the CTS-V, put some wheels on it, put an exhaust on it, and go pimp ho's nationwide like the Godfather...
http://i1132.photobucket.com/albums/m574/Eyeheartfreedumb/godfather-wwf-titantron_a_GIFSoupcom.gif