RAZR, do you have access to Baseball America's website or their prospect handbooks? If not, I can give you a screen name and a password to their website because they do list and cover some detailed information about these things.
Here is a site that I found out about recently:
http://www.60ft6in.com/index.html
While it does list MPH, it doesn't list what the specific type of pitch is.
For example, look at Brandon Webb.
http://www.60ft6in.com/DBacks.html It lists him as having a fastball that's 86-91. This listing really represents his sinker because he rarely throws a regular fastball.