After dickin with this truck for a few weeks now a couple of us have found that the most effective tricks for running the stock tires is to cut em around the outside thru the knobbies as in the pix posted here or one of the other SC10 threads.
It's worth a look.
After that, get some 1 to 2 degree rear hubs.
After that, LOAD it down with weight and motor up!
All of the other setup tips are really minor and hardly change the handling of the truck.
It'll still push into the corners and step out after it turns.

Other than that your gonna need a set of $80 1/8 scale wheels and tires and adapters.

Now your have a whole different class of Open Modified truck but it'll be fast, just not cheap.