RE: About hpi baja 5b kit
I own a Baja. IMO it is the most complete ready to run that i ever owned. The 23cc engine is more than enough power and speed, especially if you purchase a tuned pipe. The only other real upgrade you might need is metal gears for the steering servo. Sure you can upgrade the hell out of it, but Im real happy with the stock motor with my Dominator pipe and its running around 3.5 horsepower.