IMO I wouldnt buy the GPM C hub or knuckle that was linked to. I have had both and both have failed me. The threads in the GPM knuckles stripped right out and I would keep losing the king pins and the GPM C hub doesnt hold the kingpin very well at all. I would go with the 3 Racing knuckle and C hub, the C hubs hold the king pin much nicer and knuckles are much nice. You can also find them at
www.thetoyz.com or
http://www.hkshobby.com/ I beleive the Atomic set that you can find under the MI listings on HKS for $25 is a good deal as well. Good luck.