Neither the 2200 or the 2650 are ideal for racing. Actually the 2200 and 2650 are essentially the same motor in terms of how they will perform when geared to reach a given top speed. I personally would choose the 2650 because it is less weight, and has better gearing options.
Check out my custom converted 8ight:
Sub 7lb, lowest CG of any 1/8 buggy