i have one of these losi micro sct's, same color as yours and i upgraded motor to the higher output (honestly it was the same price as the stock replacement at the time i had smoked the stock motor) and the batteries to the lithium packs...i also had to "lincoln lock" both diffs because the added power basically stripped them. Mine does prolly a lil over 30 mph...its hard to control sometimes. But fun as HELL!!!