I just installed a set of 4:30 from Richmond. You will need to order special bearings from summit RAT-9004. I ordered the RMG-6900601 & RMG-8310311 from summit as well. I also installed the spacer that came in the truetrac kit and set the preload to .010" on the passenger side (I do not have green bearings). I called Eaton and they told me to only use shell spiral or Lucas oil 80/90W and no additives. Sucks because I had just dumped in 4 quarts of valvoline and he told me to drain it out. Truetrac also has a $50 mail in rebate right now. Hope this helps! Andrew
