The must haves for racing or Bashing:
MIP clutch and RPM rx box.

If racing, use the stock a-arms. The RPM ones flex too much and give inconsistent handling. I have a set of RPM arms still in the original bag for when I turn it into a Basher.
Go here for the GT info!! [link=http://www.rc10gthobby.com/]http://www.rc10gthobby.com/[/link] <--old link, still works though. Go the forums, it's all about the GT.
Plus I did the T4 front and rear mod. Makes a difference!!

The Mugen MST-1 is a sweet truck! I've been considering getting one since they are $140 for a kit. I drove just last weekend and I was very impressed.