Wallymart sells them here and ebay is running over with them. Cruiser's have 3/8 24 count threads per inch and mountain bikes have 3/8 26 threads per inch. Also bike shops but they are for the axles of the wheels not something I would want to cruise with my feet on.

If you can get an axle you could weld it to the frame of your bike then put one peg on each side. Actually that sounds like a pretty good idea.

__________________
visit my blog for Riding in the hood,... The home brew bike journal....http://frictiondrivebicycles.blogspot.com/ The deacon's fiction