Originally Posted by OptimumRC

You really don't need any of what you've listed for aftermarket parts, aside from BB springs being a good choice to go with. The rest of it is really minimal gains for the money spent.

The things I would suggest is:
-A lot of the team guys run the rear aluminum shock tower mount.
-A new set of ball cups as the kit ones are usually more brittle.
-The stock diff balls are carbide and are great, but once they wear out replace them with ceramic ones since they will pretty much last forever.
-An extra package of diff shims, you want to add 2 more shims to the short outdrive (behind the ring gear) and add atleast 1 or 2 shims to the long outdrive side. This is especially important on the front diff as it is more sensitive to improper shimming which will result in stripped gear under hard braking.
-The rear FT ballast weight, and depending on the weight of your batteries you might want to cut it down to ~50g.
-Ditch the undertray and get the FT chassis tape, it's WAY better!
-If you can get either the finnisher or Bulldog body for more steering.

Lastly, get a couple extra front shock shaft, spring cups, and front arms...thats a MUST!