Tamiya CC02 Upgrades - Yeah Racing Stainless Steel Steering Link 

BTW it helps to remove the front bumper to work on the servo arm.

Take a look at the gpm stuff for the cc02. They have a lot of good stuff

I had several comp grade crawlers and I find this CC-02 (73 Bronco) the most fun on the trail, even more so thany SCX10. So why spend the money for a steering link when the stock one works well, I did replace the plastic drag link with an Axial 98 tune (green anodized) with Axial (Traxxas) rod ends which I have plenty in my parts box. Works great and no bump steer

It looks like you'll have to use a regular screw and nut, or pop the metal ball out of the yeah racing part and pop the Tamiya one on.