There's a 300-size motor mount available from WWS that should give you the extra room you need for adjusting a larger size motor -- though these little things are plenty fast with a 180 size motor. I guess it depends on the sort of racing you plan to do.
They're the stock rears wheels. You could possibly figure out a way to wedge 4AA's in there, but the car is meant to take a 6 cell, 1/2 AA pack.
|