I have 10 moser 4" racing studs i took out of my new 12 bolt moser rear and installed 3" long ones which cost me $90.-the 4" long ones are for sale with lock nut ,spacers, and lug nuts for $60. shipped in the usa. this car will see mostly street duty is the reason for changing them out. Matt-paypal at: mytquick87@yahoo.com.