Hello I have a non vxl rally that is now a brushless 4370kv motor. I built it with parts I had. It is 98% new. I have a new/better esc on the way,front/rear chassis braces, and a metal gear servo to install. My question is what springs and shock oil to run? I noticed it has a different spring setup from from the vxl rally,. I am guessing cause of the extra weight. So I was thinking of just putting in the 90wt oil that I have from my merv.I know this question is loaded cause everyone has different setups and driving habits but just getting a consensus.