OK, as the last thread is a bit dated now, here is a new one. Basically, I started a small fan-made "sourcebook" for Kansas City in 2070. Using input from fellow Dumpshockers and a few locals I have something a bit more polished for your use.
http://www.deathguard.org/downloads/shadowsofkc.pdf
PDF format, either right-click save as, or just open it in your browser. Its about 3.73meg so dial-up beware. If anybody sees something very odd, typo's, or has input please offer it up.
Also, just a note that I prefer settings to be a broad overview, not the end-all of every single detail. As such, this document is created like that. It details 4-5 gangs, nightclubs, etc. There are obviously more in the city, but these are just some idea's. Individual GM's should have plenty of room to fit whatever unique things they want into my document and still have plenty of freedom.
Cheers.