Factory recommended alignment settings:
Front Settings
Camber, 1/8 degrees neg to 1/8 degrees pos.
Caster, 2-3/4 degrees pos.
Toe-in, 1/8"
Back Settings
Camber, 3/8 degrees neg to 5/8 degrees neg
Toe-in 1/8" to 3/16"
http://www.panteraplace.com/page95.htm
Again, this really depends on your application. Even on the "street" cars there are issues of stability, grip, tire wear, etc. Go to a good alignment shop (not your local home for wayward boys). They should be able to help you with the particular settings for your applicaiton and driving needs/style.
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