Igot one rear cen gst differential for 25$, I'm guessing the "rear gst diff" also works in the front of the Hellfire as well? Ibidded on another one so hopefully, it seems like the "rear differential"works in both front and rear. This is the one Ibought...

cgi.ebay.com/CEN-Genesis-Nemesis-GST-7-7-Rear-Differential-Diff_W0QQitemZ390148596322QQcmdZViewItemQQptZRadio _Control_Vehicles is that correct? It seems to be the complete diff that just pops in the Hellfire with all the gears inside it. Or do you have to take the gears out of the GST differential, and put them into the Hellfire's differential housing?

I guess Idon't have to upgrade the center differential?And could you possibly link me the 12t clutch bell you went with, and also why it's required to change it just because I'm changeing diffs? Thanks!