Here are three links that I have used to obtain Traction parts.
http://users.adelphia.net/~bweisman/jasonspolesite_004.htm
http://www.btinternet.com/~beckits/Pantos/pantoho.htm
http://www.eatoncustomengineering.com/HOTractionProducts.html
http://users.adelphia.net/~bweisman/jasonspolesite_004.htm
http://www.btinternet.com/~beckits/Pantos/pantoho.htm
http://www.eatoncustomengineering.com/HOTractionProducts.html