Been racing for a long time, since the first rc10GT but took a break for a while. Started racing the SC10 now SC104x4 and love it. Been reading this thread for a while and picking up some good tips.
I run on a (usually) mildly loose out door 1/8 track in South Carolina (shout out to The Hobby Connection and the Carolina RC Complex).
My setup is: RX8 / Redline 4.5 / FT Kit upgrade / Exotech Front Lockout / White sway bars (front and back), softest spring (front and back), 5k fluid in diffs and 35.5 fluid in shocks.
Truck was having issues - last race I added the sway bars, springs and fluid change - was within 1 second of fastest lap time where before I was probably 3 to 4 seconds back. Would have finished better but could not stay off pipes

. Going to try the 8mm mod and have to put travel limiters in - in a bad way.
One thing I've notices recently here, no one seems to mention the batteries in the equation for going fast. I have both 30C and 70C and the 70C really makes the truck fly (at least it seems that way). I hear some people saying the "C" rating will not change how fast the truck is. What are the thoughts out there? I'm thinking of moving to 90C or so.
For all - thanks for the advice and time put in on the board.